Garthwaite may refer to:
Anna Maria Garthwaite (1688–1763), English textile designer Emily Garthwaite (born 1993), British photojournalist Peter Garthwaite (1909–2001), English forester Phil Garthwaite (born 1972), American broadcaster, farmer and politician Rosie Garthwaite (born 1980), English journalist Ryan Garthwaite (born 1998), Australian rules footballer Garthwaite baronets