The 1955 International Cross Country Championships was held in San Sebastián, Spain, at the Lasarte Hippodrome on 19 March 1955.

In addition, an unofficial women's championship was held one week later at Ayr, Scotland on 26 March 1955.

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 male 70 athletes from 8 countries.

An unofficial count yields the participation of 12 female athletes from 2 countries.