This study report that the gamma linolenic acid content of pork is higher in finishing pigs fed diets containinghemp seed oil, evening primrose oil or borage oil as the sources of gamma linolenic acid. Thirty six three crossingswines (Landrace×Yorkshire×Duroc), 80 kg of body weight, were randomly separated into four treatment groupswith three pens per treatment and three animals per pen. The finishing swines were fed the experimental dietsfor 35 days until they reached the market weight of 110 kg. The animals were assigned to the four experimentaldiets: control diet containing 5.00% tallow, T1 containing 5.00% hemp seed oil(hemp seed oil 40 : soybean oil60), T2 containing 5.00% evening primrose oil(primrose oil 40 : soybean oil 60), T3 containing 5.00% borageoil(borage oil 40 : soybean oil 60). The plasma triacylglycerol and total cholesterol content of the swine in thegamma fatty acids-fed groups were significantly(p<0.05) lower than those in the control group. No gammalinolenic acid was detected in the plasma of the control group, while the level of gamma linolenic acid treatmentgroups was significantly(p<0.05) higher than the control in the order of T3, T2 and T1. Moreover, the level ofgamma linolenic acid increased with increasing number of feeding days. There was a significant differencebetween the treatment groups (p<0.05). There was a difference in the amount of saturated fatty acid andpolyunsaturated fatty acid accumulated in the pork according to the treatment groups or the parts of the porkmeat. The level of n-3 fatty acid of pork was highest in T1, which had been fed the hemp seed oil, followedin order by T3 and T2(p<0.05). The content of gamma linolenic acid in pork was highest in T3, which had beenfed the borage oil, followed in order by T2 and T1(p<0.05). In particular, the level of gamma linolenic acid inpork increased in the order of the back fat, pork belly, ham and loin.