Hartle is a surname. Notable people with the surname include:
Adam Hartle (born 1979), an American comedianBarry Hartle (born 1939), an English footballerEnid Hartle (1935–2008), an English opera singerGreg Hartle (born 1951), a former American football playerJames Hartle (born 1939), an American physicistJohn Hartle (1933–1968), an English professional road racerJohn A. Hartle (1891–1979), an American politicianRoy Hartle (1931–2014), an English footballerRussell P. Hartle (1889–1961), an American army officerTom Hartle, an American publisher