Pinnell is a surname. Notable people with the surname include:
Archibald Pinnell (1870–1948), Scottish footballer Bernadette Pinnell, New Zealand businesswoman Gay Su Pinnell (born 1944), American educational theorist Henry Pinnell (1670 – before 18 April 1721), English politician Jeremy Pinnell, American country musician Louise R. Pinnell (1877–1966), American lawyer Matt Pinnell (born 1979), American politician Owen Pinnell (born 1947), New Zealand bobsledder Phillip Pinnell (born 1951), Australian footballer Sheldon Pinnell ( 1937–2013), American dermatologist