Roberts Scott Blossom (March 25, 1924 – July 8, 2011) was an American theater, movie and television actor and poet. He is best known for being Old Man Marley in Home Alone and as Ezra Cobb in the horror movie Deranged. He is also remembered for his supporting roles in movies such as Close Encounters of the Third Kind and Escape from Alcatraz.

Blossom died on July 8, 2011 at the age of 87 of cerebrovascular disease. He is survived by his wife Beverly Schmidt and his two children.