John Frost may refer to:
- John Frost (Chartist) (1784–1877), Welsh Chartist
- John Frost (aviator), member of Early Birds of Aviation
- John Frost (British Army officer) (1912–1993), British army officer, served in Operation Market Garden
- John Carver Meadows Frost (1915–1979), British aircraft designer for the Avro Aircraft Company amongst others
- John Frost (footballer) (born 1980), Irish footballer
- John Frost (SAAF officer) (1918–1942), highest scoring air ace with a South African Air Force unit
- John Frost (cricketer) (1847–1916), English cricketer
- John Frost (tennis), American tennis player of the 1950s and 60s
- John K. Frost (1922–1990), cytopathologist at Johns Hopkins Hospital
- John Frost (politician) (1818–1918), Anglo-South African cabinet minister and landowner
Famous quotes containing the word frost:
“With a laugh,
An oath of towns that set the wild at naught,
They bring the telephone and telegraph.”
—Robert Frost (1874–1963)