| Watana Muangsook | |
| Native Name: | วัฒนา เมืองสุข |
| Native Name Lang: | th |
| Office: | Minister of Social Development and Human Security |
| Term Start: | 2 August 2005 |
| Term End: | 19 September 2006 |
| Primeminister: | Thaksin Shinawatra |
| Predecessor: | Pracha Maleenont |
| Successor: | Paiboon Wattanasiritham |
| Office2: | Minister of Industry |
| Term Start2: | 11 March 2005 |
| Term End2: | 2 August 2005 |
| Primeminister2: | Thaksin Shinawatra |
| Predecessor2: | Pongsak Rattanapongpaisan |
| Successor2: | Suriya Juangroongruangkit |
| Office3: | Minister of Commerce |
| Term Start3: | 8 November 2003 |
| Term End3: | 30 September 2005 |
| Primeminister3: | Thaksin Shinawatra |
| Predecessor3: | Adisai Bodharamik |
| Successor3: | Thanong Bidaya |
| Birth Date: | 28 May 1957 |
| Birth Place: | Prachinburi, Thailand |
| Party: | Pheu Thai Party (2018–2020) |
| Spouse: | Patchara Jiaravanon |
| Profession: | Politician |
| Signature: | ลายเซ็นวัฒนา เมืองสุข ภาษาอังกฤษ.png |
Watana Muangsook (th|วัฒนา เมืองสุข; born on 28 May 1957) is a Thai politician. He has held the positions of Minister of Social Development and Human Security, Minister of Industry, Minister of Commerce and Deputy Minister of Commerce in the government of Thailand.
Watana Muangsook's nickname is Kai. He was born in Prachinburi. He graduated from Suankularb Wittayalai School and Chulalongkorn University. He was also a temple boy at Wat Debsirindrawas Ratchaworawiharn.
He is married to a daughter of billionaire Sumet Jiaravanon, Patchara Jiaravanon.[1]