The men's 200 metre breaststroke competition of the swimming events at the 1955 Pan American Games took place on 20 March.

[1][2] The last Pan American Games champion was Héctor Domínguez of Argentina.

[3][4][5][6][7][8] This race consisted of four lengths of the pool, all in breaststroke.

[9] All times are in minutes and seconds.

The final was held on March 20.