Isaac Pendelton (22 November 1777 – 1 October 1804) was an American Ship's master and sealer.
[1] In 1802, he married Nancy Sheffield in Stonington, New London County, Connecticut.
In October that year he was commissioned by Fanning & Coles as captain of the US brig Union and embarked on a sealing voyage to New Holland.
In early 1803, Pendleton met French explorer, Nicolas Baudin in King George Sound.
Baudin suggested Kangaroo Island as a place where seals could be found in abundance.