Kathleen "Katie" O'Donnell Bam (born December 6, 1988) is an American field hockey player.

She was the youngest member of the 2005 United States women's national team and has become known for her excellent stick skills and ability to create.

Her attributes were put on full display throughout her freshman campaign as she earned a starting position for the preseason number-one team in the country at forward.

O'Donnell helped lead Wissahickon to the District 1 title by scoring the game-winning goal in double overtime to win the championship.

O'Donnell established her presence early at the University of Maryland putting together a freshman campaign worthy of national recognition.

[4] On March 4, 2013, it was announced that O'Donnell had signed a four-year agreement to represent and advise on products for American field hockey manufacturer STX (sports manufacturer),[10] the same day she scored her first international goal with an STX stick in a 6–0 win over Brazil during the World Hockey League qualifiers in Rio.