Daniel Sullivan (1754 – 1790) was an American military officer and frontiersman of Irish descent.
At age 9, he and another boy, Cunningham, were captured by a party of Lenape during Pontiac's War.
In 1772, the two accompanied a trading party to Fort Pitt, where Sullivan was recognized by his brother-in-law, Zadock Wright.
There, he was arrested by Lieutenant-Governor Henry Hamilton after he was recognized by an American Indian.
Sullivan returned to Fort Pitt, where he was again arrested in 1779 for "endeavouring to make the Delaware Indians break the last treaty of peace.