The men's C-1 slalom competition in canoeing at the 2008 Summer Olympics took place between August 11 and 12 2008 at the Shunyi Olympic Rowing-Canoeing Park in Beijing.
The time, in seconds, of each run was added to the number of penalty points assessed.
The total times for the two preliminary runs were summed to give a score for the heats.
The field was narrowed to the top 8 scores from that run; those 8 boats advanced to the final.
The times from the final were added to the semifinal score to give an overall total.