Mahmud Shah I of Kedah

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{{Short description|Sultan of Kedah (r. 1280–1321)}}

{{Infobox royalty

| name = Mahmud Shah I
{{lang|ms|{{Script|Arab|محمود شاه ١}}}}

| title = Sultan of Kedah

| image =

| reign = 24 August 1280 – 22 May 1321

| predecessor = Muzzil Shah

| successor = Ibrahim Shah

| spouse = Tunku Aisha

| issue = Sultan Ibrahim Shah
Tunku Azlin
Tunku Putri Zubaida

| house = Kedah

| father = Muzzil Shah

| mother =

| birth_date =

| birth_place =

| death_date = 22 May 1321

| death_place = Istana, Kota Sungai Mas

| date of burial =

| place of burial = Kota Sungai Mas Royal Cemetery

| religion = Sunni Islam

| occupation =

}}

Paduka Sri Sultan Mahmud Shah I ibni al-Marhum Sultan Muzzil Shah (Jawi: ڤدوك سري سلطان محمود شاه ١ ابن المرحوم سلطان مزعل شاه; died 22 May 1321) was the fifth Sultan of Kedah and reigned from 1280 to 1321. He ordered the construction of Kota Seputih and Kota Di Hulu Sungai Merpah as a fortress from the Tenasserim tribe.