Petri Juhani Keskitalo (born March 10, 1967, in Raahe, Northern Ostrobothnia) is a retired male decathlete from Finland. He was nicknamed "Pete" and "Elmo".
His best performance was fifth place (8318 points) at the 1991 World Championships in Athletics in Tokyo. Result was Finnish record at that time. He finished in eleventh place (8143 points) at the 1988 Summer Olympics in Seoul, South Korea. He also competed at the 1992 Summer Olympics in Barcelona, Spain, but did not finish the competition.