Sir Nicholas Acheson, 4th Baronet

Sir Nicholas Acheson 4th Baronet (c. 1655–1701) was an Irish baronet and politician.

The son of Sir George Acheson, 3rd Baronet, he succeeded to the baronetcy upon the death of his father. Between 1695 and 1699, he represented County Armagh in the Irish House of Commons. In 1695, he was appointed High Sheriff of Armagh.

He married Anne Taylor in 1676, with whom he had the following children:
 * Nichola Anne Acheson
 * Alexander Acheson (1676–1757)
 * Sir Arthur Acheson, 5th Baronet (1688 – 1748 or 1749)