Esko Nikkari (23 November 1938 Lapua, Finland – 17 December 2006 in Seinäjoki, Finland) was a prolific Finnish actor who made more than 70 appearances on film and television. He debuted in 1974 in the movie Karvat.
Nikkari was a workhorse of the Kaurismäki brothers, with whom he first worked on Rikos ja rangaistus in 1983. His last role with Aki Kaurismäki was in Man without a Past in 2002.
He starred in the 1994 film Aapo opposite actors such as Taisto Reimaluoto, Ulla Koivuranta and Kai Lehtinen. More recently, he has appeared in a number of Timo Koivusalo films such as Kaksipäisen kotkan varjossa (2005), which is the last full-length movie he appeared in.