This study was conducted at the Poultry Research Station (Abu Ghraib), State Board of Agriculture Research, Ministry of Agriculture for the period from 30 September 2009 to 24 January 2010 to study the effect of adding different levels of the synthetic amino acid LArginine (0, 0.05, 0.1, 0.15 %) to turkey diet on productive performance of the native turkey. A total of 60 females, 32 weeks of age were randomly selected from the native turkey stock that breeded in Poultry Research Station (Abu Ghraib). The birds were distributed randomly into 4 treatments. The females were distributed into 12 pens (replicates) with 3 replicates for each treatment, five females were assigned for each replicates (15 females for each treatment). The results showed that treated the birds with L. Arginine resulted in a highly significant increase (P<0.01) in H.D and H.H egg production, egg mass, egg weight, and cumulative eggs number for all periods of the experiment.