The 1905 World Allround Speed Skating Championships took place at 21 and 22 January 1905 at the ice rink Stadspark in Groningen, Netherlands.

Sigurd Mathisen was defending champion.

Coen de Koning won three of the four distances and became World champion.

Source: SpeedSkatingStats.com[1] Four distances have to be skated: One could only win the World Championships by winning at least three of the four distances, so there would be no World Champion if no skater won at least three distances.

Silver and bronze medals were not awarded.