The 2004 Rink Hockey Men's B World Championship was the 36th edition of the Rink Hockey B World Championship, held from October 16 to 23, in Macau.

The champion was Catalonia, that had obtained a FIRS provisional membership few months before the tournament.

However, FIRS did not endorse final acceptance of Catalonia for subsequent editions, being a sporting scandal known as the Fresno Case.

Competition's schedule included 11 countries, divided in two groups, but North Korea withdrew a few days before the opening.

All times are Macau local time (UTC+8).