Josselyn is a surname, and may refer to:
George Josselyn (1807–1888), English solicitor and politician Henry Josselyn (died c. 1683), settler in New England John Josselyn (fl.1638–1675), English travel writer John Josselyn (MP) (c.1490–1553/4), English politician Ralph Josselyn (died 1478), English politician Randy Josselyn (born 1974), American actor Sheena Josselyn, Canadian neuroscientist Simeon T. Josselyn (1842–1905), Union Army officer who was awarded the Medal of Honor
See also Jocelyn (surname)