Isaac Anderson (November 23, 1760 – October 27, 1838) was a member of the U.S. House of Representatives from Pennsylvania from 1803 to 1807.

[1] At the age of 15, he served as carrier of dispatches between the headquarters of the Revolutionary Army under General George Washington at Valley Forge and the Congress, then in session at York, Pennsylvania.

He served three terms of service in the American Revolutionary War before reaching the age of 18, at which time he became an ensign in the Fifth Battalion of Chester County Militia.

[1][2] Anderson served as justice of the peace in Charlestown Township for several years.

[1][3] His grandson Matthias J. Pennypacker served in the Pennsylvania House of Representatives.