diff --git a/atst/domain/permission_sets.py b/atst/domain/permission_sets.py
index 4d02682a..52131a20 100644
--- a/atst/domain/permission_sets.py
+++ b/atst/domain/permission_sets.py
@@ -86,6 +86,7 @@ _PORTFOLIO_APP_MGMT_PERMISSION_SETS = [
         "permissions": [
             Permissions.EDIT_APPLICATION,
             Permissions.CREATE_APPLICATION,
+            Permissions.DELETE_APPLICATION,
             Permissions.EDIT_APPLICATION_MEMBER,
             Permissions.CREATE_APPLICATION_MEMBER,
             Permissions.EDIT_ENVIRONMENT,
diff --git a/atst/models/permissions.py b/atst/models/permissions.py
index cb03020d..98f25b36 100644
--- a/atst/models/permissions.py
+++ b/atst/models/permissions.py
@@ -8,6 +8,7 @@ class Permissions(object):
     VIEW_APPLICATION = "view_application"
     EDIT_APPLICATION = "edit_application"
     CREATE_APPLICATION = "create_application"
+    DELETE_APPLICATION = "delete_application"
     VIEW_APPLICATION_MEMBER = "view_application_member"
     EDIT_APPLICATION_MEMBER = "edit_application_member"
     CREATE_APPLICATION_MEMBER = "create_application_member"
diff --git a/atst/routes/portfolios/applications.py b/atst/routes/portfolios/applications.py
index 20603b3c..955683dd 100644
--- a/atst/routes/portfolios/applications.py
+++ b/atst/routes/portfolios/applications.py
@@ -15,6 +15,7 @@ from atst.domain.portfolios import Portfolios
 from atst.forms.application import NewApplicationForm, ApplicationForm
 from atst.domain.authz.decorator import user_can_access_decorator as user_can
 from atst.models.permissions import Permissions
+from atst.utils.flash import formatted_flash as flash
 
 
 @portfolios_bp.route("/portfolios/<portfolio_id>/applications")
@@ -118,3 +119,18 @@ def access_environment(portfolio_id, environment_id):
     token = app.csp.cloud.get_access_token(env_role)
 
     return redirect(url_for("atst.csp_environment_access", token=token))
+
+
+@portfolios_bp.route(
+    "/portfolios/<portfolio_id>/applications/<application_id>/delete", methods=["POST"]
+)
+@user_can(Permissions.DELETE_APPLICATION, message="delete application")
+def delete_application(portfolio_id, application_id):
+    application = Applications.get(application_id)
+    Applications.delete(application)
+
+    flash("application_deleted", application_name=application.name)
+
+    return redirect(
+        url_for("portfolios.portfolio_applications", portfolio_id=portfolio_id)
+    )
diff --git a/atst/utils/flash.py b/atst/utils/flash.py
index d2b42979..dd32f5cc 100644
--- a/atst/utils/flash.py
+++ b/atst/utils/flash.py
@@ -148,6 +148,15 @@ MESSAGES = {
         """,
         "category": "success",
     },
+    "application_deleted": {
+        "title_template": "Success!",
+        "message_template": """
+        You have successfully deleted the {{ application_name }} application.
+        To view the retained activity log, visit the portfolio administration
+        page. <a href="#">Undo this action</a>.
+        """,
+        "category": "success",
+    },
 }
 
 
diff --git a/tests/routes/portfolios/test_applications.py b/tests/routes/portfolios/test_applications.py
index ab958f8a..8df582e3 100644
--- a/tests/routes/portfolios/test_applications.py
+++ b/tests/routes/portfolios/test_applications.py
@@ -1,4 +1,4 @@
-from flask import url_for
+from flask import url_for, get_flashed_messages
 
 from tests.factories import (
     UserFactory,
@@ -290,3 +290,42 @@ def test_environment_access_with_no_role(client, user_session):
         )
     )
     assert response.status_code == 404
+
+
+def test_delete_application(client, user_session):
+    user = UserFactory.create()
+    port = PortfolioFactory.create(
+        owner=user,
+        applications=[
+            {
+                "name": "mos eisley",
+                "environments": [
+                    {"name": "bar"},
+                    {"name": "booth"},
+                    {"name": "band stage"},
+                ],
+            }
+        ],
+    )
+    application = port.applications[0]
+    user_session(user)
+
+    response = client.post(
+        url_for(
+            "portfolios.delete_application",
+            portfolio_id=port.id,
+            application_id=application.id,
+        )
+    )
+    # appropriate response and redirect
+    assert response.status_code == 302
+    assert response.location == url_for(
+        "portfolios.portfolio_applications", portfolio_id=port.id, _external=True
+    )
+    # appropriate flash message
+    message = get_flashed_messages()[0]
+    assert "deleted" in message["message"]
+    assert application.name in message["message"]
+    # app and envs are soft deleted
+    assert len(port.applications) == 0
+    assert len(application.environments) == 0
diff --git a/tests/test_access.py b/tests/test_access.py
index c79fd64d..0208887b 100644
--- a/tests/test_access.py
+++ b/tests/test_access.py
@@ -203,6 +203,44 @@ def test_portfolios_create_member_access(post_url_assert_status):
     post_url_assert_status(rando, url, 404)
 
 
+# portfolios.delete_application
+def test_portfolios_delete_application_access(post_url_assert_status, monkeypatch):
+    ccpo = UserFactory.create_ccpo()
+    owner = user_with()
+    app_admin = user_with()
+    rando = user_with()
+
+    portfolio = PortfolioFactory.create(
+        owner=owner, applications=[{"name": "mos eisley"}]
+    )
+    application = portfolio.applications[0]
+
+    ApplicationRoleFactory.create(
+        user=app_admin,
+        application=application,
+        permission_sets=PermissionSets.get_many(
+            [
+                PermissionSets.VIEW_APPLICATION,
+                PermissionSets.EDIT_APPLICATION_ENVIRONMENTS,
+                PermissionSets.EDIT_APPLICATION_TEAM,
+                PermissionSets.DELETE_APPLICATION_ENVIRONMENTS,
+            ]
+        ),
+    )
+
+    monkeypatch.setattr("atst.domain.applications.Applications.delete", lambda *a: True)
+
+    url = url_for(
+        "portfolios.delete_application",
+        portfolio_id=portfolio.id,
+        application_id=application.id,
+    )
+    post_url_assert_status(app_admin, url, 404)
+    post_url_assert_status(rando, url, 404)
+    post_url_assert_status(owner, url, 302)
+    post_url_assert_status(ccpo, url, 302)
+
+
 # portfolios.edit_application
 def test_portfolios_edit_application_access(get_url_assert_status):
     ccpo = user_with(PermissionSets.EDIT_PORTFOLIO_APPLICATION_MANAGEMENT)