Halldorson is a surname. Notable people with the surname include:
Christian Halldorson (1891–1956), Canadian politician Dan Halldorson (born 1952), Canadian golfer Laura Halldorson (born 1963), American ice hockey player and coach Salome Halldorson (1887–1970), Canadian politician
See also Halldórsson, Icelandic patronymic name