The First Ministry of Manmohan Singh was the first Union Council of Ministers of India under the Prime Ministership of Dr. Manmohan Singh. It was formed after the 2004 Indian general election held in four phases during 20 April - 10 May 2004, to elect the 14th Lok Sabha, and it functioned from 2004 to May 2009. After the election Singh took the oath as the Prime Minister of India on 22 May 2004, and continued to hold the post till full term, the next Council of Ministers of the Republic of India was sworn in on 22 May 2009, when Singh started his second term in office as PM.

Manmohan Singh is an Indian retired politician, economist, academician and bureaucrat who served as the 13th Prime Minister of India from 2004 to 2014. He is the third longest-serving prime minister after Jawaharlal Nehru and Indira Gandhi. A member of the Indian National Congress, Singh was the first Sikh prime minister of India. He was also the first prime minister since Jawaharlal Nehru to be re-elected after completing a full five-year term. Singh is also regarded as the most educated prime minister of India.