• Olive (tree) (Olea), a genus of about 20 species of small trees in the family Oleaceae
• olive (fruit), the fruit of this tree
• Olive leaf, which is used medicinally
• St Helena olive, Nesiota, a tree in the Rhamnaceae
• Olive (color), a dark green/brown colour

Places

• Olive, California, in the United States
• Olive, Montana, in the United States
• Olive Green, a settlement in Staffordshire, England
• Olive Grove, former sports stadium in Sheffield, UK
• Olive Township, several places in the United States

People

• Olive (martyr) (Blessed Olive), a Catholic martyr from Italy
• DJ Olive, a disk jockey and turntablist
• Olive Oyl, Popeye's girlfriend
• Olive - a character from the TV show On The Buses

Organizations

• Olive (band), a musical group
• Olive (retailer), a deli chain from Manchester, England
• Olive Garden, a popular American restaurant chain
• The Olive Tree (political coalition), a former Italian political alliance

Other uses

• Olive, a British food magazine
• The olivary body, part of the brain (brainstem)
• A type of mollusk similar to the cowry
• Part of a compression fitting, used in plumbing
• Olive, a Japanese fashion magazine
• Mono Olive, a subproject of the Mono project
• Olive python, the second largest Australian python.