Marrion Douglass Roe (later Beck; 3 April 1935 – 29 June 2017) was a New Zealand swimmer who represented her country at the 1954 British Empire and Commonwealth Games and the 1956 Summer Olympics.

Born in Invercargill on 3 April 1935,[1] Roe later moved to Hamilton,[2] and represented Waikato at the New Zealand national swimming championships.

[3] In 1954, Roe swam at the British Empire and Commonwealth Games in Cardiff.

[5] In February 1955, Roe swam what was at that time the fastest 100 yards freestyle in the Southern Hemisphere, recording a time of 59.0 seconds, which was 0.9 seconds outside Jody Braskamp's world record.

[1] In early 1957, Roe married John Aitchison Beck, who was secretary of the Waikato Swimming Centre.