Seumanu Aita Ah Wa (died 23 January 2004) was a Samoan politician and former Cabinet Minister. He was a member of the Human Rights Protection Party. Seumanu was a businessman. He was first elected to the Legislative Assembly of Samoa at the 1979 election, and was appointed Minister of Agriculture. He lost his seat in the 1985 election. Following the death of former Prime Minister Tofilau Eti Alesana he was re-elected to parliament in the . He was re-elected in 2001 and was appointed Minister of Justice.