diff --git a/hypha/apply/activity/adapters/base.py b/hypha/apply/activity/adapters/base.py
index 42d2701744..480bb6727e 100644
--- a/hypha/apply/activity/adapters/base.py
+++ b/hypha/apply/activity/adapters/base.py
@@ -37,6 +37,7 @@
     MESSAGES.REVIEW_REMINDER: "reminder",
     MESSAGES.BATCH_UPDATE_INVOICE_STATUS: "invoices",
     MESSAGES.REMOVE_TASK: "task",
+    MESSAGES.UPDATED_AUTHOR: "old_author",
 }
 
 
diff --git a/hypha/apply/activity/adapters/emails.py b/hypha/apply/activity/adapters/emails.py
index c6f58ce450..dd151ceac0 100644
--- a/hypha/apply/activity/adapters/emails.py
+++ b/hypha/apply/activity/adapters/emails.py
@@ -70,6 +70,7 @@ class EmailAdapter(AdapterBase):
         MESSAGES.REPORT_NOTIFY: "messages/email/report_notify.html",
         MESSAGES.REVIEW_REMINDER: "messages/email/ready_to_review.html",
         MESSAGES.PROJECT_TRANSITION: "handle_project_transition",
+        MESSAGES.UPDATED_AUTHOR: "messages/email/author_updated.html",
     }
 
     def get_subject(self, message_type, source):
diff --git a/hypha/apply/activity/adapters/slack.py b/hypha/apply/activity/adapters/slack.py
index d2de9ca18f..eff2f17ed2 100644
--- a/hypha/apply/activity/adapters/slack.py
+++ b/hypha/apply/activity/adapters/slack.py
@@ -137,6 +137,9 @@ class SlackAdapter(AdapterBase):
         MESSAGES.UNARCHIVE_SUBMISSION: _(
             "{user} has unarchived the submission: {source.title_text_display}"
         ),
+        MESSAGES.UPDATED_AUTHOR: _(
+            "{user} has updated author from {old_author} to {source.user} for submission <{link}|{source}>"
+        ),
     }
 
     def __init__(self):
diff --git a/hypha/apply/activity/migrations/0087_alter_event_type.py b/hypha/apply/activity/migrations/0087_alter_event_type.py
new file mode 100644
index 0000000000..b258596418
--- /dev/null
+++ b/hypha/apply/activity/migrations/0087_alter_event_type.py
@@ -0,0 +1,83 @@
+# Generated by Django 4.2.18 on 2025-02-06 04:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("activity", "0086_remove_django_messages_adapter"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="event",
+            name="type",
+            field=models.CharField(
+                choices=[
+                    ("UPDATE_LEAD", "updated lead"),
+                    ("BATCH_UPDATE_LEAD", "batch updated lead"),
+                    ("EDIT_SUBMISSION", "edited submission"),
+                    ("APPLICANT_EDIT", "edited applicant"),
+                    ("NEW_SUBMISSION", "submitted new submission"),
+                    ("DRAFT_SUBMISSION", "submitted new draft submission"),
+                    ("SCREENING", "screened"),
+                    ("TRANSITION", "transitioned"),
+                    ("BATCH_TRANSITION", "batch transitioned"),
+                    ("DETERMINATION_OUTCOME", "sent determination outcome"),
+                    ("BATCH_DETERMINATION_OUTCOME", "sent batch determination outcome"),
+                    ("INVITED_TO_PROPOSAL", "invited to proposal"),
+                    ("REVIEWERS_UPDATED", "updated reviewers"),
+                    ("BATCH_REVIEWERS_UPDATED", "batch updated reviewers"),
+                    ("PARTNERS_UPDATED", "updated partners"),
+                    ("PARTNERS_UPDATED_PARTNER", "partners updated partner"),
+                    ("READY_FOR_REVIEW", "marked ready for review"),
+                    ("BATCH_READY_FOR_REVIEW", "marked batch ready for review"),
+                    ("NEW_REVIEW", "added new review"),
+                    ("COMMENT", "added comment"),
+                    ("PROPOSAL_SUBMITTED", "submitted proposal"),
+                    ("OPENED_SEALED", "opened sealed submission"),
+                    ("REVIEW_OPINION", "reviewed opinion"),
+                    ("DELETE_SUBMISSION", "deleted submission"),
+                    ("DELETE_REVIEW", "deleted review"),
+                    ("DELETE_REVIEW_OPINION", "deleted review opinion"),
+                    ("CREATED_PROJECT", "created project"),
+                    ("UPDATE_PROJECT_LEAD", "updated project lead"),
+                    ("UPDATE_PROJECT_TITLE", "updated project title"),
+                    ("EDIT_REVIEW", "edited review"),
+                    ("SEND_FOR_APPROVAL", "sent for approval"),
+                    ("APPROVE_PROJECT", "approved project"),
+                    ("ASSIGN_PAF_APPROVER", "assign project form approver"),
+                    ("APPROVE_PAF", "approved project form"),
+                    ("PROJECT_TRANSITION", "transitioned project"),
+                    ("REQUEST_PROJECT_CHANGE", "requested project change"),
+                    ("SUBMIT_CONTRACT_DOCUMENTS", "submitted contract documents"),
+                    ("UPLOAD_DOCUMENT", "uploaded document to project"),
+                    ("UPLOAD_CONTRACT", "uploaded contract to project"),
+                    ("APPROVE_CONTRACT", "approved contract"),
+                    ("CREATE_INVOICE", "created invoice for project"),
+                    ("UPDATE_INVOICE_STATUS", "updated invoice status"),
+                    ("APPROVE_INVOICE", "approve invoice"),
+                    ("DELETE_INVOICE", "deleted invoice"),
+                    ("SENT_TO_COMPLIANCE", "sent project to compliance"),
+                    ("UPDATE_INVOICE", "updated invoice"),
+                    ("SUBMIT_REPORT", "submitted report"),
+                    ("SKIPPED_REPORT", "skipped report"),
+                    ("REPORT_FREQUENCY_CHANGED", "changed report frequency"),
+                    ("DISABLED_REPORTING", "disabled reporting"),
+                    ("REPORT_NOTIFY", "notified report"),
+                    ("REVIEW_REMINDER", "reminder to review"),
+                    ("BATCH_DELETE_SUBMISSION", "batch deleted submissions"),
+                    ("BATCH_ARCHIVE_SUBMISSION", "batch archive submissions"),
+                    ("BATCH_INVOICE_STATUS_UPDATE", "batch update invoice status"),
+                    ("STAFF_ACCOUNT_CREATED", "created new account"),
+                    ("STAFF_ACCOUNT_EDITED", "edited account"),
+                    ("ARCHIVE_SUBMISSION", "archived submission"),
+                    ("UNARCHIVE_SUBMISSION", "unarchived submission"),
+                    ("REMOVE_TASK", "remove task"),
+                    ("UPDATED_AUTHOR", "updated author"),
+                ],
+                max_length=50,
+                verbose_name="verb",
+            ),
+        ),
+    ]
diff --git a/hypha/apply/activity/options.py b/hypha/apply/activity/options.py
index 36b0bc4edc..9c51ad2048 100644
--- a/hypha/apply/activity/options.py
+++ b/hypha/apply/activity/options.py
@@ -79,3 +79,4 @@ class MESSAGES(TextChoices):
     ARCHIVE_SUBMISSION = "ARCHIVE_SUBMISSION", _("archived submission")
     UNARCHIVE_SUBMISSION = "UNARCHIVE_SUBMISSION", _("unarchived submission")
     REMOVE_TASK = "REMOVE_TASK", _("remove task")
+    UPDATED_AUTHOR = "UPDATED_AUTHOR", _("updated author")
diff --git a/hypha/apply/activity/templates/messages/email/author_updated.html b/hypha/apply/activity/templates/messages/email/author_updated.html
new file mode 100644
index 0000000000..cd091b5f83
--- /dev/null
+++ b/hypha/apply/activity/templates/messages/email/author_updated.html
@@ -0,0 +1,16 @@
+{% extends "messages/email/applicant_base.html" %}
+
+{% load i18n %}
+
+{% block content %}{# fmt:off #}
+{% blocktrans with title=source.title %}You have assigned as an Applicant to submission "{{ title }}".{% endblocktrans %}
+{% endblock %}
+
+{% block more_info %}
+{% trans "Link to your submission" %}: {{ request.scheme }}://{{ request.get_host }}{{ source.get_absolute_url }}
+{% trans "If you have any questions, please submit them here" %}: {{ request.scheme }}://{{ request.get_host }}{{ source.get_absolute_url }}#communications
+
+{% trans "See our guide for more information" %}: {{ ORG_GUIDE_URL }}
+
+{% blocktrans %}If you have any issues accessing the submission or other general inquiries, please email us at {{ ORG_EMAIL }}{% endblocktrans %}
+{% endblock %}{# fmt:on #}
diff --git a/hypha/apply/funds/forms.py b/hypha/apply/funds/forms.py
index 3e3bf483cd..518a0f39ce 100644
--- a/hypha/apply/funds/forms.py
+++ b/hypha/apply/funds/forms.py
@@ -324,6 +324,35 @@ def make_role_reviewer_fields():
     return role_fields
 
 
+class UpdateAuthorForm(ApplicationSubmissionModelForm):
+    author = forms.ModelChoiceField(
+        queryset=User.objects.applicants(),
+        label=_("Applicants"),
+        required=False,
+    )
+    author.widget.attrs.update({"data-placeholder": "Select..."})
+
+    class Meta:
+        model = ApplicationSubmission
+        fields: list = []
+
+    def __init__(self, *args, **kwargs):
+        kwargs.pop("user")
+        super().__init__(*args, **kwargs)
+        current_author = self.instance.user
+
+        author_field = self.fields["author"]
+
+        # Removed current author from queryset
+        author_field.queryset = author_field.queryset.exclude(id=current_author.id)
+        author_field.initial = current_author
+
+    def save(self, *args, **kwargs):
+        self.instance.user = self.cleaned_data["author"]
+        self.instance.save()
+        return self.instance
+
+
 class UpdatePartnersForm(ApplicationSubmissionModelForm):
     partner_reviewers = forms.ModelMultipleChoiceField(
         queryset=User.objects.partners(),
diff --git a/hypha/apply/funds/permissions.py b/hypha/apply/funds/permissions.py
index d4075ff74a..0e59936b9e 100644
--- a/hypha/apply/funds/permissions.py
+++ b/hypha/apply/funds/permissions.py
@@ -193,9 +193,20 @@ def can_view_submission_screening(user, submission):
     return True, ""
 
 
+def can_change_submission_author(user, submission):
+    if not user.is_authenticated:
+        return False, "Login Required"
+
+    if user.is_apply_staff:
+        return True, "Staff can update author"
+
+    return False, "Forbidden Error"
+
+
 permissions_map = {
     "submission_view": is_user_has_access_to_view_submission,
     "submission_edit": can_edit_submission,
+    "change_author": can_change_submission_author,
     "can_view_submission_screening": can_view_submission_screening,
     "archive_alter": can_alter_archived_submissions,
 }
diff --git a/hypha/apply/funds/templates/funds/includes/admin_primary_actions.html b/hypha/apply/funds/templates/funds/includes/admin_primary_actions.html
index 7bcbf79797..01fe45cb2b 100644
--- a/hypha/apply/funds/templates/funds/includes/admin_primary_actions.html
+++ b/hypha/apply/funds/templates/funds/includes/admin_primary_actions.html
@@ -103,6 +103,12 @@ <h5>{% trans "Actions to take" %}</h5>
             hx-target="#htmx-modal"
         >{% trans "Create Reminder" %}</button>
 
+        <button
+            class="button button--white button--full-width button--bottom-space"
+            hx-get="{% url 'funds:submissions:change_author' pk=object.pk %}"
+            hx-target="#htmx-modal"
+        >{% trans "Change Author" %}</button>
+
         <a class="button button--white button--full-width button--bottom-space"
            href="{% url "apply:submissions:download" pk=object.pk %}"
         >
diff --git a/hypha/apply/funds/templates/funds/modals/update_author_form.html b/hypha/apply/funds/templates/funds/modals/update_author_form.html
new file mode 100644
index 0000000000..2ab677c012
--- /dev/null
+++ b/hypha/apply/funds/templates/funds/modals/update_author_form.html
@@ -0,0 +1,37 @@
+{% load i18n static %}
+{% modal_title %}{% trans "Update Author" %}{% endmodal_title %}
+
+<form
+    class="p-4 form"
+    id="author_form"
+    hx-target="this"
+    hx-swap="outerHTML"
+    method="POST"
+    hx-post="{% url 'funds:submissions:change_author' pk=object.pk %}"
+>
+    <div>
+        <dl class="mb-4">
+            <dt class="font-semibold">{% trans "Current Author" %}</dt>
+            <dd class="truncate">{{ object.user }} &lt;{{object.user.email}}&gt;</dd>
+        </dl>
+    </div>
+
+    {% url 'funds:submissions:change_author' pk=object.pk as author_update_url %}
+    {% include 'funds/includes/dialog_form_base.html' with form=form value=value %}
+</form>
+
+
+<script type="module">
+    {% comment %} Do this here as the select elements for partners are dynamically generated. {% endcomment %}
+    import Choices from "{% static 'js/esm/choices.js-10-2-0.js' %}";
+
+    const selectElements = document.querySelectorAll('#author_form select');
+
+    // add choices to all select elements
+    selectElements.forEach((selectElement) => {
+        new Choices(selectElement, {
+            removeItemButton: true,
+            allowHTML: true,
+        });
+    });
+</script>
diff --git a/hypha/apply/funds/urls.py b/hypha/apply/funds/urls.py
index 7b3bc9344b..14492c43f7 100644
--- a/hypha/apply/funds/urls.py
+++ b/hypha/apply/funds/urls.py
@@ -50,6 +50,7 @@
     CreateProjectView,
     ProgressSubmissionView,
     SubmissionEditView,
+    UpdateAuthorView,
     UpdateLeadView,
     UpdateMetaTermsView,
     UpdatePartnersView,
@@ -209,6 +210,11 @@
                         ReminderCreateView.as_view(),
                         name="create_reminder",
                     ),
+                    path(
+                        "author/change/",
+                        UpdateAuthorView.as_view(),
+                        name="change_author",
+                    ),
                     path(
                         "translate/",
                         TranslateSubmissionView.as_view(),
diff --git a/hypha/apply/funds/views/submission_edit.py b/hypha/apply/funds/views/submission_edit.py
index ccffe5381e..cabd5c14b4 100644
--- a/hypha/apply/funds/views/submission_edit.py
+++ b/hypha/apply/funds/views/submission_edit.py
@@ -51,6 +51,7 @@
 from .. import services
 from ..forms import (
     ProgressSubmissionForm,
+    UpdateAuthorForm,
     UpdateMetaTermsForm,
     UpdatePartnersForm,
     UpdateReviewersForm,
@@ -641,6 +642,65 @@ def post(self, *args, **kwargs):
         )
 
 
+@method_decorator(staff_required, name="dispatch")
+class UpdateAuthorView(View):
+    model = ApplicationSubmission
+    form_class = UpdateAuthorForm
+    context_name = "author_form"
+    template = "funds/modals/update_author_form.html"
+
+    def dispatch(self, request, *args, **kwargs):
+        self.submission = get_object_or_404(ApplicationSubmission, id=kwargs.get("pk"))
+        permission, reason = has_permission(
+            "change_author",
+            request.user,
+            object=self.submission,
+            raise_exception=False,
+        )
+        if not permission:
+            messages.warning(self.request, reason)
+            return HttpResponseRedirect(self.submission.get_absolute_url())
+        return super(UpdateAuthorView, self).dispatch(request, *args, **kwargs)
+
+    def get(self, *args, **kwargs):
+        author_form = self.form_class(user=self.request.user, instance=self.submission)
+        return render(
+            self.request,
+            self.template,
+            context={
+                "form": author_form,
+                "value": _("Update"),
+                "object": self.submission,
+            },
+        )
+
+    def post(self, *args, **kwargs):
+        form = self.form_class(
+            self.request.POST, user=self.request.user, instance=self.submission
+        )
+        old_author = self.submission.user
+        if form.is_valid():
+            form.save()
+
+            messenger(
+                MESSAGES.UPDATED_AUTHOR,
+                request=self.request,
+                user=self.request.user,
+                source=self.submission,
+                related=old_author,
+            )
+
+            messages.success(self.request, "Author updated successfully")
+            return HttpResponseClientRefresh()
+
+        return render(
+            self.request,
+            self.template,
+            context={"form": form, "value": _("Update"), "object": self.submission},
+            status=400,
+        )
+
+
 @method_decorator(staff_required, name="dispatch")
 class UpdatePartnersView(View):
     model = ApplicationSubmission