Samuel Owoola Lanlehin was the treasurer of the Action Group in the 1960s. He was also a director of the Western Nigeria Development Corporation and his account was investigated by the Coker Commission charged with the responsibility of looking into the affairs of statutory agencies in the Western region after a declaration of emergency in 1962.
He was also a founding member of the Ibadan People's Party.
Lanlehin was born on August 22, 1919 to Samson Ladipo Lanlehin. He later married Abigail Amusan. He was educated at Ibadan Grammar School and later joined the teaching profession briefly from 1938-1942. He then worked as an accountant, and clerk before establishing his own business. In 1951, he won an election to the Western Nigeria Assembly.
He is considered one of the mentors of Ibadan politician, Lamidi Adedibu.