Sir Leslie Lynn Marr of Sunderland, 2nd Baronet (14 August 1922 – 4 May 2021) was a British landscape artist, painter and racing driver.

Marr was born in Durham, England, the son of Lieutenant Colonel and brevet Colonel John Lynn Marr (1877–1931), OBE, TD, of the Royal Garrison Artillery, director of two shipbuilding firms and of the Sunderland Forge and Engineering Company,[1] and Amelia Rachel (1884–1971; known as "May"),[2] daughter of Robert Thompson, of Over Dinsdale Hall, County Durham, a shipbuilder.

In 1932, at the age of ten, due to his father's death the previous year he inherited the baronetcy held by his grandfather, shipbuilder Sir James Marr, 1st Baronet, though he did not use the title.

[8][9][10] After the war ended, Marr attended life classes at Heatherley's Art School in Pimlico and subsequently studied under David Bomberg at what was then known as the Borough Polytechnic (now London South Bank University).

He allocated the upper floor of a bookshop he had rented as an exhibition space for Bomberg's students (who became known as the Borough Group).