The 3rd Gorkha Rifles or Third Gorkha Rifles, abbreviated as 3 GR is an Indian Army infantry regiment. It was originally a Gurkha regiment of the British Indian Army formed in 1815. This regiment recruit mainly Magars and Gurung tribes. They were present at a number of actions and wars including the siege of Delhi in 1857 to the First and Second World Wars. After the Partition of India in 1947 the regiment was one of the six Gorkha regiments transferred to the Indian Army as part of the Tripartite Agreement signed between India, Nepal and Britain at the time of Indian independence. Prior to independence, the regiment was known as the 3rd Queen Alexandra's Own Gurkha Rifles. In 1950 the regiment's title was changed to 3rd Gorkha Rifles. Since 1947 the regiment has participated in a number of conflicts including the 1947 and 1971 wars against Pakistan.

The Gurkhas or Gorkhas, with the endonym Gorkhali, are soldiers native to the Indian subcontinent, chiefly residing within Nepal and some parts of North India.