The 1931 International Cross Country Championships was held in Dublin, Ireland, at the Baldoyle Racecourse on 28 March 1931.

For the first time, an unofficial women's championship was held a week earlier in Douai, France on 22 March 1931.

[2] Complete results for men,[3] and for women (unofficial),[4] medallists, [5] and the results of British athletes[6] were published.

An unofficial count yields the participation of 54 male athletes from 6 countries.

An unofficial count yields the participation of 16 female athletes from 3 countries.