Michelle Cosier (née Musselwhite) (born 30 April 1982) is an Australian basketball player who has played for the Canberra Capitals in the WNBL.

[5] When not playing basketball, Cosier works with indigenous children, promoting healthy living.

[5] Cosier played junior basketball with Victoria's Bairnsdale Bullets.

[7] In a January 2011 article, the Canberra Times described her as being a threat to shoot on the perimeter.

[10] Cosier participated in the team's first training session for the season on 13 September 2011 at the Belconnen Basketball Centre.

In the Grand Finals loss versus Bankstown Bruins, she scored 7 points.

[16] Cosier has played for the young and senior national teams, 34 and 17 caps respective for each.