Demetrius Alexander (born November 3, 1975) is an American retired professional basketball player.

He arrived in Europe in 2000, signing with Hapoel Galil Elyon of the Israeli Basketball Super League.

[1] For the 2002–03 season he signed with Pallalcesto Amatori Udine of the Italian Lega Basket Serie A.

In April 2006 he signed with Élan Béarnais Pau-Orthez of the French League for the rest of the season.

In the summer of 2006 he signed with Caja San Fernando of the Spanish ACB League for the 2006–07 season.