Disclosed is a metathesis natural oil composition comprising (i) a mixture of olefins and / or esters or (ii) a metathesis natural oil. The metathesis natural oil composition has a number average molecular weight of about 100 g / mol to about 150,000 g / mol, a weight average of about 1,000 g / mol to about 100,000 g / mol, and a Z average molecular weight of about 5,000 g / mol to about 1. The polydispersity index is from about 1 to about 20. The metathesis natural oil composition has been metathesized at least once.(i)オレフィン類及び/若しくはエステル類の混合物又は(ii)メタセシス天然油を含むメタセシス天然油組成物を開示する。メタセシス天然油組成物の数平均分子量は約100g/mol~約150,000g/mol、重量平均は約1,000g/mol~約100,000g/mol、Z平均分子量は約5,000g/mol~約1,000,000g/mol、多分散指数は約1~約20である。メタセシス天然油組成物は、少なくとも1回メタセシスされている。