Frederick Leslie Roy Dalgarno (2 December 1910 – 1 February 2001) was an Australian social realist artist.
From 1926 to 1930 he attended National Gallery Art School in Melbourne, where he met social realists Noel Counihan and Herbert McClintock.
Later, between 1951 and 1953 he was at Ecole des Beaux Arts in Paris, including in 1951–52 William Hayter’s Atelier 17 (etching).
In 1953 he won the First Prize for Diploma Students, lithography, at the Ecole des Beaux Arts, Paris.
The art historian Bernard Smith wrote of Dalgarno: "He belongs to that great generation of social realist Australian artists who flourished during World War II and early post-war years but – in the aftermath of the Cold War – are now largely stored and forgotten by curators."