The men's 200 metre breaststroke event at the 1968 Summer Olympics was held from 21 to 22 October 1968 at the Alberca Olímpica Francisco Márquez.

[1] Prior to this competition, the existing world and Olympic records were as follows.

The competition consists of two rounds: heats and a final.

The swimmers with the best eight times in the heats advance to the final.

All times are Central Time Zone (UTC-6)[2] Heat 1 Heat 2 Heat 3 Heat 4 Heat 5