The Marlin Model 336 is a lever-action rifle made by Marlin Firearms. It is most often chambered in .30-30 Winchester and .35 Remington, though it has also been chambered in several other cartridges over the years, and is considered to be a woods rifle suited for taking medium game within 150 yards (137m).
The solid, flat top and side ejection of the 336 allowed Marlin to sell to the growing number of American hunters who preferred optical sights over the traditional iron sights. In the mid-1950's Marlin incorporated its proprietary Micro-Groove rifling system into the Model 36. This rifling was designed to work better with jacketed bullets than more traditional rifling is. Earlier rifles tended to use lead bullets.
The 336 is credited as number two in all-time leader in U.S. high-powered rifle sales, after the Winchester Model 1894.