John Erik Butler Jr. (born December 4, 2002) is an American professional basketball player for the Capital City Go-Go of the NBA G League.

Butler played basketball for Christ Church Episcopal School in Greenville, South Carolina, where he was coached by his father, John Sr., and was teammates with his younger brother, Jordan.

[1] As a senior, he averaged 20.1 points, 8.5 rebounds and 2.9 blocks per game, earning Upstate Player of the Year honors from The Greenville News.

[3] A four-star recruit, he committed to playing college basketball for Florida State over offers from Georgia Tech, Alabama, South Carolina, Vanderbilt and Wake Forest.

[13] However, he was waived on December 8,[14] after appearing in nine games with the Capital City Go-Go, Washington's NBA G League affiliate.