USCGC Pontchartrain (WHEC-70) was an Owasco class high endurance cutter built for World War II service with the United States Coast Guard.

Named after Lake Pontchartrain, Louisiana, the ship was commissioned as a patrol gunboat with ID number WPG-70 on 28 July 1945.

Her ID was later changed to WHEC-70 (HEC for "High Endurance Cutter"—the "W" signifies a Coast Guard vessel).

On 16 October 1956, she rescued all on Pan American Clipper 6, which ditched only 1⁄2 mile from the cutter's position at Ocean Station N.[5] On 20 November 1956, Pontchartrain assisted LSM-455 aground on San Clemente Island.

On 30 April 1963, Pontchartrain assisted the disabled FV Gaga 10 miles east of San Nicolas Island.