diff --git a/src/aerie_cli/aerie_client.py b/src/aerie_cli/aerie_client.py
index f010555b..2443a42e 100644
--- a/src/aerie_cli/aerie_client.py
+++ b/src/aerie_cli/aerie_client.py
@@ -1654,8 +1654,28 @@ def __expand_activity_arguments(self, plan: ActivityPlanRead, full_args: str = N
                 activity.arguments = ApiEffectiveActivityArguments.from_dict(
                     resp).arguments
         return plan
+    
+    def add_constraint_tag(self, constraint_id: int, tag_name: str):
+        add_constraint_tag_query = """
+        mutation AddTagToConstraint($constraint_id: Int, $tag_id: Int) {
+            insert_constraint_tags(objects: {constraint_id: $constraint_id, tag_id: $tag_id}) {
+                returning {
+                    tag_id
+                }
+            }
+        }
+        """
+        
+        #add tag to constraint
+        resp = self.aerie_host.post_to_graphql(
+            add_constraint_tag_query, 
+            constraint_id=constraint_id, 
+            tag_id=self.get_tag_id_by_name(tag_name)
+        )
 
-    def upload_constraint(self, constraint):
+        return  resp['returning'][0]["tag_id"]
+
+    def upload_constraint(self, constraint, tags=None):
         upload_constraint_query = """
         mutation CreateConstraint($constraint: constraint_insert_input!) {
             createConstraint: insert_constraint_one(object: $constraint) {
@@ -1665,6 +1685,12 @@ def upload_constraint(self, constraint):
         """
 
         resp = self.aerie_host.post_to_graphql(upload_constraint_query, constraint=constraint)
+
+        #add each tag to constraint
+        if tags is not None:
+            for tag in tags:
+                new_tag_id = self.add_constraint_tag(resp["id"], tag)
+
         return resp["id"]
     
     def delete_constraint(self, id):
diff --git a/src/aerie_cli/commands/constraints.py b/src/aerie_cli/commands/constraints.py
index 60e2ceda..cd45aed4 100644
--- a/src/aerie_cli/commands/constraints.py
+++ b/src/aerie_cli/commands/constraints.py
@@ -4,6 +4,7 @@
 import typer
 from rich.console import Console
 from rich.table import Table
+from typing import List
 
 from aerie_cli.commands.command_context import CommandContext
 
@@ -15,7 +16,8 @@ def upload(
     plan_id: int = typer.Option(None, help="The plan id associated with the constraint (do not input model id)"),
     name: str = typer.Option(..., help="The name of the constraint", prompt=True),
     description: str = typer.Option("", help="The description of the constraint"), # optional
-    constraint_file: str = typer.Option(..., help="The file that holds the constraint", prompt=True)
+    constraint_file: str = typer.Option(..., help="The file that holds the constraint", prompt=True), 
+    tags: List[str] = typer.Option(None, help="A list of tag names to upload with the constraint (existing or new tags)")
 ):
     """Upload a constraint"""
 
@@ -33,7 +35,7 @@ def upload(
         "description": description,
         "definition": str_contents
     }
-    constraint_id = client.upload_constraint(constraint)
+    constraint_id = client.upload_constraint(constraint, tags)
     typer.echo(f"Created constraint: {constraint_id}")
 
 @app.command()