People from Delphi, Indiana

Amanda Lindsay Overmyer (b ca. 1984) is an American rock singer-songwriter from Camden, Indiana who was the eleventh place finalist on the seventh season of American Idol.

William Fritz Afflis (June 27, 1929 – November 10, 1991) was an American professional wrestler and football player, better known by his ring name, Dick the Bruiser. He is a one-time world champion in professional wrestling, having held the AWA World Heavyweight Championship.

John Doxie Moore (February 13, 1911 – April 23, 1986) was an American basketball player and coach. He attended Delphi High School in Delphi, Indiana, and played college basketball at Purdue University from 1930 to 1934, playing alongside John Wooden as Purdue laid claim to the 1932 Helms Athletic Foundation National Championship. He coached several professional basketball teams, including the Sheboygan Red Skins, the Anderson Packers and the Milwaukee Hawks in the 1940s and 1950s.

John Gould Moyer (July 12, 1893 – January 21, 1976) was a United States Navy Rear admiral, and the 31st Governor of American Samoa from June 5, 1942 to February 8, 1944. He was born in Chicago, Illinois, but lived in both Indiana and Hawaii for much of his life. Moyer was admitted to the United States Naval Academy on June 16, 1910, and became an Ensign shortly upon graduation. He became a Commander in 1934, a Captain in 1939, and eventually a Rear admiral. During his governorship, Moyer recommended the tour of duty of the men under his command be reduced, and took over command of the United States Marines barracks previously under the control of Brigadier general Henry Louis Larsen.

Clarence Whistler (February 24, 1856 - November 6, 1885) was a professional athlete and champion Greco-Roman wrestler of the 1880s. As the main rival to William Muldoon in wrestling of the early 1880s, he was best remembered for his unusual strength, indifference to pain and early death. He wrestled three famous bouts with Muldoon, totaling over 14 hours.

Gregory David Wasson (born October 19, 1958) is co-founder and president of Wasson Enterprise, a family-based investment office, the executive chairman of Innventure, co-founder of CoolerScreens, and the former president and chief executive officer (CEO) of Walgreens Boots Alliance (NASDAQ: WBA). Prior to the merger of Walgreens and Alliance Boots, Wasson was president and CEO of Walgreens, the US's largest retail community pharmacy chain.

Moses Edwin Clapp (May 21, 1851 – March 6, 1929) was an American lawyer and politician.

Willis Verl Young (October 27, 1911 – April 3, 1981), frequently misnamed as Willie Young, was an American professional basketball player. He played in the National Basketball League in just two games for the Whiting Ciesar All-Americans during the 1937–38 season (both being playoff appearances).

Adam Floy Casad (June 12, 1879 – November 14, 1927) was an American football player and an officer in the United States Army.

Charles William Bulger (August 3, 1851 – June 17, 1922) was an architect in the United States, born in Delphi, Indiana. He worked with Isaac Rapp in Trinidad, Colorado, at Bulger and Rapp for several years, designing many of the city's early buildings. The firm dissolved in 1892.