GROT, or "Get Rid Of Them", a tactical voter campaign in the 1997 UK General Elections

The pseudonym of Stefan Rowecki, a Polish general, journalist and the leader of the Armia Krajowa

Grotz, an alternate name for Gretchin in the Warhammer 40,000 universe

The PZL TS-16 Grot, a Polish warplane

Yakov Karlovich Grot, a nineteenth-century Russian philologist

Grot-Rowecki, a freighter which collided with a chemical tanker in the English Channel

Guillano Grot, a Dutch footballer

Grot, a fictional business in the British sitcom, The Fall and Rise of Reginald Perrin

Grot, a slang word meaning "dirt" or "ugliness", more often used in its adjectival form, "grotty". Variations of the word may also mean "pornographic material" or as a racist epithet towards individuals having dark skin in the "Down River" area of Detroit, Michigan