Six species of abomasal nematodes were recovered from Svalbard reindeer. Marshallagia niarshalli and Ostertagia grühneri were more prevalent than Skrjabinagia lyrata, Teladorsagia circumcincta, Ostertagia occidentalis and Ostertagia trifurcata. Of 24 reindeer examined all harbored adult abomasal nematodes. There was no significant difference in intensity of infection between winter (April) and autumn (October) for either adult males or females. In winter, intensity of infection of adult males was significantly higher than that of females. In calves, during the autumn, intensity of infection was low.