List of Chief Ministers of Arunachal Pradesh

1. Prem Khandu Thungan(13 August 1975-18 September 1979)    
2. Tomo Riba(18 September 1979-3 November 1979)    
3. President's rule(3 November 1979-18 January 1980)    
4. Gegong Apang(18 January 1980-19 January 1999)    
5. Mukut Mithi(19 January 1999-3 August 2003)    
6. Gegong Apang(3 August 2003-9 April 2007)    
7. Dorjee Khandu(9 April 2007-30 April 2011)    
8. Jarbom Gamlin(5 May 2011-31 October 2011)    
9. Nabam tuki(1 November 2011-Incumbent)

Source:

• Wikipedia
• http://www.arunachalpradeshcm.in/formercms.php