The light welterweight class in the boxing competition was the sixth-lowest weight class. Light welterweights were limited to those boxers weighing a maximum of 63.5 kilograms (139.9 lbs). 35 boxers qualified for this category. Like all Olympic boxing events, the competition was a straight single-elimination tournament. Both semifinal losers were awarded bronze medals, so no boxers competed again after their first loss. Bouts consisted of six rounds each. Five judges scored each bout.[1]
| Date | Round | ||
|---|---|---|---|
| Sunday, October 13, 1968 | First round | ||
| Friday, October 18, 1968 | Second round | ||
| Monday, October 21, 1968 | Third round | ||
| Wednesday, October 23, 1968 | Quarterfinals | ||
| Thursday, October 24, 1968 | Semifinals | ||
| style=background:lemonchiffon | Saturday, October 26, 1968 | style=background:lemonchiffon | Final Bout |