Omar José Hasan Jalil (born April 21, 1971 in Tucumán) is an Argentine retired rugby union footballer.

He last played for Stade Toulousain in the domestic French club competition, the Top 14.

Hasan made his international debut for Argentina on March 4, 1995 against fellow South Americans Uruguay.

Argentina won the game, which was played in Buenos Aires and was a part of the Pan-American Championship.

Toulouse were crowned champions, ending Hasan's career on a winning note.