John Bull was a French prize captured in 1798 that was lost on a slave trading voyage in 1802.

Captain Thomas Wright sailed her from England on 24 August 1801 to the Bight of Biafra and Gulf of Guinea islands.

[4] She was wrecked at the Portuguese island of Saint Thomas's (probably São Tomé and Príncipe) around June 1802.

After collecting a cargo of slaves at Bonny, Crow sailed for Saint Thomas to resupply.

Disease broke out among the rescued men and after Crow landed them some time later at Barbados, most died.