Belfrage is a surname. Notable people with the surname include:
Cedric Belfrage (1904–1990), British journalist, socialist, author and translator
Bruce Belfrage (1900–1974), English actor and BBC newsreader
Fredrik Belfrage (born 1949), Swedish TV and radio presenter
Gustav Wilhelm Belfrage (1834–1882), American insect collector
Henry Belfrage (1774–1835), Scottish theologian
Nicolas Belfrage (born 1940), British Master of Wine and writer
Sally Belfrage (1936–1994), American writer and journalist