Lithops viridis, the green rock-plant, is a species of plant in the Aizoaceae family. Its rocklike leaves protect it from predators. Its leaves are succulent. The daisy-like flowers close at night, and this one is one of the handful of Lithops with green leaves. Its two leaves are formed like a sprouting bean.

• Margaret Garland
• Margaret G. Arnstein
• Margaret Garritsen de Vries
• Margaret Garwood
• Margaret Gayen
• Margaret Geddes (artist)
• Margaret Gel
• Margaret Gene Arnstein
• Margaret George (athlete)
• Margaret George de Mille
• Margaret Georgiadis
• Margaret Georgiadou
• Margaret Georgina Constance Guilfoyle
• Margaret Georgina Guilfoyle
• Margaret G. Hermann
• Margaret Gibson (rower)
• Margaret Gibson (swimmer)
• Margaret Giles
• Margaret Girvan
• Margaret Gladstone
• Margaret Glaspy
• Margaret Gomm
• Margaret Good
• Margaret Gordon (illustrator)
• Margaret Grace Thorsborne