George Caspar Adams (April 24, 1863 – July 13, 1900) was an American football player and former head coach of the Harvard University football program from 1890 to 1892. He co-coached with George A. Stewart, another Harvard graduate.

Adams was born on April 24, 1863, in Boston, Massachusetts. He is a member of the Adams political family, which includes his father politician John Quincy Adams II and two United States Presidents, his grandfather John Quincy Adams and his great-grandfather John Adams.^[1] His mother was also a granddaughter of United States Secretary of the Navy Benjamin Williams Crowninshield under presidents James Madison and James Monroe.^[2] Adams attended the Adams Academy before entering Harvard in 1882,^[3] where he graduated with an A.B. in 1886.^[3]

During his time as a student at Harvard, Adams played a vital role in reinstating the football program in 1886 for Harvard by heading a petition movement to the administration. Once the season was granted, Adams played on the team and assisted in managing and coaching it.^[4][5]

In 1890, Adams, along with another fellow alumnus, George A. Stewart (Class of 1884) were appointed as coaches for the Harvard football program of the upcoming season. In their first season, the team went 11–0, winning the national championship, also with five players being named All-Americans.^[6] The appointment of Adams and Stewart is widely regarded to be the beginning of an organized coaching system at Harvard.^[7]

Adams later resided in Boston where he worked for real estate.^[3] He was also a recreational yachtsman who belonged to many yacht clubs.^[3] Adams died of tuberculosis in Quincy on July 13, 1900.^[3]