格伦（英语：Gren，也被写作Gre²n）是一家出现在《侠盗猎车手III》、《侠盗猎车手：罪恶都市和《侠盗猎车手：圣安地列斯》中的环卫公司。Dumpsters with the logo can be seen in Newport, Staunton Island across the street from the multistory carpark and in Pike Creek, Shoreside Vale near the inaccessible repair garages and behind the hospital. There are also dumpsters in the Ghost Town. These dumpsters are stationary and will stay put if shot, ran over, or blown up. On the side of the dumpsters, a light blue label reads "Institutional Recycling Program", which reveals that the are a recycling program for Liberty City. It is one of the logos found on the AMCo. filling station sign in Harwood, Portland. The name is a play on the word 'Green', which refers to something that is environmentally-friendly.