30+ Outstanding Fruits That Start With O 

Ever wondered how many fruits that start with O you actually know? Most people can name one or two—like oranges or olives—but did you know there are over 30 fruits that begin with the letter O? It’s easy to overlook these tasty, nutritious gems simply because they’re not as common.

In this post, we’ll explore a fun and surprising list of 30+ fruits that start with O, from familiar favorites to rare finds you’ve probably never heard of. Whether you’re a fruit lover, a curious foodie, or just want to boost your trivia game, you’re in for a delicious adventure.

1. Ogeechee Lime
   
   
   The Ogeechee lime is a small, sour fruit that grows on trees in the southeastern United States. It looks like a green berry and tastes like lemon. Though not a true lime, it was used by Native Americans and early settlers to make drinks and preserves.
   Ogeechee lime fruit, Nyssa ogeche, wild lime USA, sour native fruit, southern wild fruit.

2. Oil Palm Fruit
   
   Oil palm fruit grows in clusters on the oil palm tree, mostly in Africa and Southeast Asia. The fruit is small, reddish-orange, and full of oil, which is used in cooking, cosmetics, and soap. Palm oil is a major global product, but its production also raises environmental concerns.
   Oil palm fruit, Elaeis guineensis, palm oil source, tropical oil fruit, palm oil environmental impact.

3. Okari Nut
   
   
   The Okari nut comes from trees in Papua New Guinea and nearby regions. It’s a type of wild nut with a hard shell and creamy, edible center. Okari nuts are eaten roasted or raw and are rich in protein and fat.
   Okari nut, Terminalia kaernbachii, wild edible nut, Papua New Guinea food, tropical nut.

4. Olallieberry
   
   
   Olallieberry is a dark purple berry that is a hybrid between a blackberry and a loganberry. It is sweet, tart, and juicy, perfect for pies, jams, and syrups. Grown mostly in California, it’s a favorite in local farms and bakeries.
   Olallieberry fruit, blackberry hybrid, California berry, olallieberry jam, tart berry.

5. Olive
   
   
   Olives are small fruits that grow on olive trees in the Mediterranean region. They come in green and black varieties and are usually cured before eating. Olives are used to make olive oil, a staple in cooking around the world.
   Olive fruit, Mediterranean olive, olive oil, green olives, black olives.

6. Opal Apple
   
   
   The Opal apple is a yellow apple with a crisp texture and sweet flavor. It doesn’t brown easily when cut, making it perfect for salads and snacks. Opal apples are grown mainly in the United States and are known for their bright color and honey-like taste.
   Opal apple, yellow apple variety, non-browning apple, sweet crunchy apple, US grown apple.

7. Opuntia (Prickly Pear)
   
   
   Prickly pear is the fruit of the Opuntia cactus. It has spiky skin and juicy, colorful pulp inside—usually red, purple, or green. Native to the Americas, it’s eaten raw or used in juice, candy, and jam.
   Opuntia fruit, prickly pear cactus, cactus fruit, nopales, edible cactus.

8. Orange
    
9. Oregon Grape
   
   
   Oregon grape is a small, dark blue fruit that grows on a bush native to North America. It’s very sour but high in antioxidants. Often used in jellies and herbal remedies, it’s not a true grape but looks similar.Oregon grape fruit, Mahonia aquifolium, wild edible berry, herbal fruit, North American berry.

10. Oroblanco
    
    
    Oroblanco is a sweet citrus fruit that looks like a greenish grapefruit but tastes milder and less bitter. It’s a hybrid of pomelo and grapefruit, developed in California. Oroblanco means “white gold” in Spanish.
    Oroblanco fruit, sweet grapefruit, citrus hybrid, pomelo grapefruit cross, white gold citrus.
    
11. Ortanique
12. Oso Berry
13. Osage Orange
14. Osteen Mango
15. Otaheite Gooseberry
16. Otaheite Apple (Malay Apple)
17. Oullins Gage (Plum)
18. Ogeechee Tupelo
19. Ogeechee Plum
20. Ozark Gold Apple
21. Ozark Beauty Strawberry
22. Ogeechee Limeberry
    
    
    Ogeechee limeberry is a small, tart fruit that grows on a native shrub found in the southeastern United States. It’s often confused with the Ogeechee lime (from the tupelo tree), but limeberry refers more broadly to related shrubs in the Triphasia genus, such as Triphasia trifolia. These fruits are small, red, and tangy, somewhat like tiny limes or sour berries. They are sometimes used in preserves and attract birds and wildlife: Ogeechee limeberry, Triphasia trifolia, wild citrus berry, sour berry shrub, native American fruit.
23. Ogeechee Fruit
24. Orangelo
25. Orin Apple
26. Orinoco Banana
27. Orangelo Fruit
28. Ogeechee Cherry
29. Omuboro (African Star Apple)
30. Ogeechee Nut
31. Ogeechee Berry
32. Ogeechee Persimmon
33. Ogeechee Melon