Huai Yot (Thai: ห้วยยอด, pronounced [hûa̯j jɔ̂ːt]) is a district (amphoe) in the northern part of Trang province, Thailand.

Neighboring districts are (from the north clockwise): Ratsada of Trang Province; Thung Song of Nakhon Si Thammarat province; Pa Phayom and Si Banphot of Phatthalung province; Mueang Trang and Wang Wiset of Trang Province; and Bang Khan of Nakhon Si Thammarat province.

Originally named Khao Khao (เขาขาว), it was renamed Huai Yot in 1939.

The district is divided into 16 sub-districts (tambons), which are further subdivided into 133 villages (mubans). There are three townships (thesaban tambons): Huai Yot covers parts of tambons Huai Yot and Khao Pun; Na Wong covers parts of tambons Na Wong, Bang Kung, and Wang Khiri; and Lam Phu Ra covers parts of tambon Lam Phu Ra. There are a further 16 tambon administrative organizations (TAO).

No. Name Thai name Villages Pop. 1. Huai Yot ห้วยยอด 5 11,377 2. Nong Chang Laen หนองช้างแล่น 12 7,795 5. Bang Di บางดี 12 7,679 6. Bang Kung บางกุ้ง 9 5,317 7. Khao Kop เขากอบ 12 7,894 8. Khao Khao เขาขาว 7 3,797 9. Khao Pun เขาปูน 7 4,791 10. Pak Chaem ปากแจ่ม 7 4,927 11. Pak Khom ปากคม 7 3,438 14. Tha Ngio ท่างิ้ว 8 4,557 15. Lamphu Ra ลำภูรา 10 5,709 16. Na Wong นาวง 11 6,504 17. Huai Nang ห้วยนาง 8 5,710 19. Nai Tao ในเตา 4 2,704 20. Thung To ทุ่งต่อ 8 3,738 21. Wang Khiri วังคีรี 6 4,324

Missing numbers are tambons which now form Ratsada District.

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