"Jag ljuger så bra" ("I lie so well") is the third single from Swedish pop singer Linda Bengtzing, released on her debut studio album Ingenting att förlora during the first quarter of 2006.

The song, composed especially for Melodifestivalen by Lars Diedricson, Martin Hedström, and Ingela “Pling” Forsman, was originally written for another artist, Jessica Andersson, who instead chose "Kalla nätter" ("Cold Nights") to perform at the contest.

On 18 February 2006, Bengtzing's performance of the song qualified for the final round of Melodifestivalen 2006 by placing 2nd at the first semifinal in the city of Leksand.

At the final in Stockholm, it finished in seventh place with 56 points, 34 from juries and 22 from public (138,249 televotes).

On 13 August 2006, Jag ljuger så bra made its nineteenth and last Svensktoppen visit.