Hilton Julius Armstrong Jr. (born November 11, 1984)[1] is an American former professional basketball player currently working as an assistant coach for the Santa Cruz Warriors of the NBA G League.

After graduating from Peekskill High School, Armstrong started off slowly as a college athlete, averaging under 4 points in each of first 3 seasons at UConn with the Huskies.

He followed after his teammate Josh Boone, and won the Big East Defensive Player of the Year award in the 2005–06 season.

Known for his shot-blocking and athleticism, he was anticipated by analysts to be an instant contributor to the Hornets front line, but the team then traded for the Chicago Bulls center Tyson Chandler.

[2] On February 18, 2010, Armstrong was traded to the Houston Rockets, along with Kevin Martin, for Carl Landry and Joey Dorsey.

[3] On February 23, 2011, Armstrong was traded to the Atlanta Hawks, along with Kirk Hinrich, in exchange for Mike Bibby, Jordan Crawford, Maurice Evans and a first-round pick in the 2011 NBA draft.

[17] On May 5, 2015, Armstrong recorded a career-high 30 points, shooting 10-of-14 from the field, along with nine rebounds, three assists and three steals in a 74–94 blowout loss to Fenerbahçe.

[19] However, on November 10, 2015, he parted ways with Büyükçekmece and joined Denizli Basket of the Turkish Basketball First League for the rest of the season.

[22] On August 16, 2018, he signed a one-year deal with the Israeli team Bnei Herzliya, joining his former teammate Jeff Adrien.