Isaac Sparks (1719–1776) was an Irish stage actor. He was born in Dublin, the younger brother of actor Luke Sparks. He established himself on the Dublin stage in the 1730s, appearing at both the and Smock Alley and then the Aungier Street Theatre during the 1740s. In 1745 he made his London debut at the Drury Lane Theatre and remained in the company there until 1748. He then returned to Dublin and was part of the Smock Alley company until 1758, before transferring to the new Crow Street Theatre for two years, before again returning to Smock Alley. His also performed widely in Irish provincial theatres, with visits to Belfast, Cork and Limerick amongst others.