The FO0XB Clipperton Island DXpedition was an amateur radio expedition that took place over two weeks in March and April 1978.

[2] The group left from San Diego on March 14, 1978 and was the first DXpedition to Clipperton Island in over 20 years and was the first a few other successful major DXpeditions including FO0XX (1985), FO0CI (1992), FO0AAA (2000), TX5C (2008), TX5K (2013) and TX5S (2024).

[4][7] The operators attempted to make contacts using the amateur radio satellite Oscar 7.

[2] Members of the expedition came from many walks of life including a police officer, medical doctor, teacher, horticulturist, and a judge.

[4] Contacts made with members of this expedition are mentioned by some ham radio operators as one of their more sought after and interesting contacts in their collection.