Atje Keulen-Deelstra (31 December 1938 – 22 February 2013) was a Dutch speed skater, who was a four-time World Allround Champion between the age of 32 and 36.

As a teenager she did gymnastics, athletics and basketball, but finally chose speed skating.

More successes soon followed when in 1972, she became Dutch, European, and World Allround Champion, a feat she then repeated the following two years (1973 and 1974).

[1] In 1975, Keulen-Deelstra switched to marathon skating and she became Dutch Champion in that discipline five times.

[1] An overview of medals won by Keulen-Deelstra at important championships she participated in, listing the years in which she won each: Dutch National Kortebaan Speed Skating Championships - 1969, 1976, 1977 Over the course of her career, Keulen-Deelstra skated 2 world records: