diff --git a/frappe/query_builder/custom.py b/frappe/query_builder/custom.py
index faa1c4b37f..dc9c7f6354 100644
--- a/frappe/query_builder/custom.py
+++ b/frappe/query_builder/custom.py
@@ -15,6 +15,28 @@ class GROUP_CONCAT(DistinctOptionFunction):
 		        alias (Optional[str], optional): [ is this an alias? ]. Defaults to None.
 		"""
 		super().__init__("GROUP_CONCAT", column, alias=alias)
+		self._separator = ","
+
+	@builder
+	def separator(self, separator: str = ""):
+		"""Adds a separator to the GROUP_CONCAT function.
+		Args:
+				separator (str, optional): [separator to be used]. Defaults to ",".
+		"""
+		self._separator = separator
+
+	def get_sql(self, **kwargs):
+		query_alias = self.alias
+		self.alias = None
+		sql = super().get_sql(**kwargs)
+		if self._separator:
+			sql = f"{sql[:-1]} SEPARATOR {frappe.db.escape(self._separator)})"
+
+		self.alias = query_alias
+		if self.alias:
+			quote = kwargs.get("quote_char", "`")
+			sql += f" {quote}{self.alias}{quote}"
+		return sql
 
 
 class STRING_AGG(DistinctOptionFunction):
diff --git a/frappe/tests/test_query_builder.py b/frappe/tests/test_query_builder.py
index 0635198fdc..920b06e4af 100644
--- a/frappe/tests/test_query_builder.py
+++ b/frappe/tests/test_query_builder.py
@@ -35,7 +35,12 @@ def unimplemented_for(*dbtypes: db_type_is) -> Callable:
 @run_only_if(db_type_is.MARIADB)
 class TestCustomFunctionsMariaDB(IntegrationTestCase):
 	def test_concat(self):
-		self.assertEqual("GROUP_CONCAT('Notes')", GroupConcat("Notes").get_sql())
+		self.assertEqual("GROUP_CONCAT('Notes' SEPARATOR ',')", GroupConcat("Notes").get_sql())
+		user = frappe.qb.DocType("User")
+		query = frappe.qb.from_(user).select(GroupConcat(user.email).separator(" | ").as_("user_list"))
+		sql = query.get_sql()
+		self.assertIn("SEPARATOR ' | '", sql)
+		self.assertIn("`user_list`", sql)
 
 	def test_match(self):
 		query = Match("Notes")