Nicolaes Olycan (16 May 1599 – 2 April 1639) was a Netherlands brewer of Haarlem.

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 married Agatha Dicx of brewery Scheepje on 27 April 1631.

In 1639 Nicolaes died and Agatha remarried, on 7 April 1645, to Mattheus Hoffland.