Albert (Peto) Nicholas (9 May 1951 – 15 August 2012) was a Cook Islands politician.
He was member of the Cook Islands Parliament for the seat of the seat of Avatiu/Ruatonga for 18 years.
Nicholas was born on Rarotonga and educated at St Joseph primary school and Tereora College.
He was first elected to Parliament as a member of the Alliance Party in the 1994 election.
He was re-elected in 1999 as a member of the New Alliance Party, but switched allegiance to the Cook Islands Party later that year.Nicholas left the CIP in July 2010 following a dispute about candidate selection, and founded the Party Tumu.
He stood under that party's banner in the 2010 election, but was unsuccessful.
On 15 August 2012 Nicholas died of a heart attack while driving in Rarotonga.