Peterkin is a surname, alternatively spelled Peterken. It is a medieval diminutive of the given name Peter. Notable people with the surname include:
Daisy Ann Peterkin (1884–1952), a dancer professionally known as Mademoiselle Dazie
Elizabeth Helen Peterken, the birth name of Betsy McCaughey, an American politician
Freddie Lee Peterkin, an American singer-songwriter
George William Peterkin (1841–1916), the first Episcopal bishop of West Virginia
Jamie Peterkin, b. 1982, a Saint Lucian Olympic swimmer
Julia Peterkin (1880–1961), a South Carolina fiction writer
Dr. Michael Peterkin, the founder of the Pierro winery in Australia
Major-General Peter Grant Peterkin, b. 1947, a retired British army officer
Rebekah Dulaney Peterkin (1847–1891), an American philanthropist
Wilbur J. Peterkin (1904–1996), an American military officer
