Nicolaes Olycan (16 May 1599 – 2 April 1639) was a Netherlands brewer of Haarlem. Olycan was born in Haarlem as the son of the brewers Pieter Jacobsz Olycan and Maritge Claesdr. Voogt. His brothers and sisters also became brewers. Besides running a brewery, he was a member of the Haarlem schutterij and served as sergeant during the years 1627–1630, and appears in the schutterstuk by Hendrik Pot of 1630. He was then promoted to lieutenant during the years 1630–1633, and appears in The Officers of the St Adrian Militia Company in 1633. He served again in (1636-1639), but died before the painting was finished that commemorated his service.