Kai Arne Engelstad (born 21 December 1954, in Oslo) is a former speed skater from Norway.

Engelstad specialised on the sprint, with his strongest distance being the 1,000 m. He had his best year in 1984 when he became Norwegian Sprint Champion for the third time, won bronze on the 1,000 m at the Winter Olympics of Sarajevo, and won another bronze medal when he finished third at the World Sprint Championships in Trondheim.

Engelstad represented the club Aktiv SK.

An overview of medals won by Engelstad at important championships he participated in, listing the years in which he won each: To put these personal records in perspective, the WR column lists the official world records on the dates that Engelstad skated his personal records.

This biographical article about a Norwegian speed skater is a stub.