Allsup may refer to:
Businesses Allsup's, an American convenience store chain Allsup LLC, a National Social Security Disability Representative
People with the surname James Allsup (born 1995), American antisemitic white supremacist Lynne Allsup (1949–2023), American former swimmer, 1964 Olympic participant Michael Allsup (born 1947), American guitarist Tommy Allsup (1931–2017), American rockabilly musician
Places Mount Allsup, a mountain in Antarctica