"Big Iron" is a country ballad song written and performed by Marty Robbins.

Texas Red, despite having already killed 20 men, is beaten in a duel due to the speed of the ranger, and the titular "big iron" gun.

[4] The B-side, "Saddle Tramp" was not included on Gunfighter Ballads,[2] but was later placed on Robbins' 1966 LP The Drifter.

[5] "Big Iron" is featured in the 2010 video game Fallout: New Vegas on the in-game radio station.

In the decade following Fallout: New Vegas's release, "Big Iron" became an Internet meme, gaining popularity through remixes and parodies.