The two Warhol portraits will go on public display for the first time in the UK, and will complement the 'Andy Warhol: Pop, Power and Politics' exhibition taking place at Holyrood from October 5 to November 3.
The pictures show Warhol standing in front of his painting of American actress and singer Pia Zadora in 1983, and a black and a double image photograph of the Pop Artist having lunch with Bianca Jagger in 1977.
The Parliament's Presiding Officer, the Rt Hon Tricia Marwick MSP said: "I am very grateful to Harry for loaning us these portraits. Like Warhol, he too has gained international acclaim for his images documenting political events and well known personalities from across the globe."
Harry Benson said: "I am honoured to have my photographs hang in the Scottish Parliament.
"In the 60s and 70s I used to see Andy out and about in New York City having a great time with his 'superstar' entourage."