William Henry Fitzjohn (5 November 1915 – 20 December 1989) was a Sierra Leonean churchman, educator and diplomat.

From 1950 to 1959, he taught educational sociology and religion at Fourah Bay College, University of Durham, and was associate minister at King memorial, Evangelical United Brethren church.

Early in the spring of 1961, a snub turned into an international incident, when he stopped for dinner with his driver at a Howard Johnson's restaurant on the outskirts of Hagerstown, Maryland en route to Pittsburgh for a lecture.

The president of Howard Johnson's apologized for the snub while the mayor of Hagerstown, Winslow F. Burhans, invited him to a dinner with several of the city's leading citizens.

[3] From 1961 to 1965, he and his wife served as Principal and Vice-Principal of Harford Secondary School for Girls in Sierra Leone.