Foxhall Alexander Parker Sr. (1788 – 23 November 1857) was an officer in the United States Navy.

[5] Following his assignment with Cushing, he was sent to Europe in 1848[6] to advise the German government while commanding the Boston naval yard.

He declined, his son later presumed, because he didn't want to leave the US Navy and was concerned about the unsettled state of Europe at the time.

[6] In 1851, Parker was appointed "special Commissioner" to Havana, Cuba, to meet with Spanish General Captain Concha, who held 156 American prisoners who were sentenced to work in prison mines as punishment for their involvement in a failed insurrection.

[10] The British officer commanding the Royal Navy in the Caribbean (Vice-Admiral George F. Seymour) took immediate steps to defuse the crisis by admonishing the captain who had fired the shots, and sent one of his captains to meet with Parker and assure him "the interception of Vanderbilt's ship was completely unauthorized.