50 Best Baby Names That Start With The Letter O

If you're expecting a little one soon, or helping a friend land on a choice for the best baby names, you've come to the right place. Maybe you're planning far into your future and are trying to choose unique baby names.

We have compiled a list of baby names that start with the letter "O," and everything you need to know about them. With popular names like Otis, Oz, Oleander, and more, we have sifted through names from every origin. So, if you're looking for a name with a little more meaning, here are some of our favorites.

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1. Octavius

Origin: Latin

Meaning: Eighth

2. Odell

Origin: English

Meaning: Of the valley

3. Odilo

Origin: Teutonic

Meaning: Rich in battle

4. Oldrich

Origin: Czech

Meaning: One with riches and power

5. Oliver

Origin: Norse

Meaning: Peaceful, affectionate

6. Omar

Origin: Arabic

Meaning: Life or thriving, long living

7. Ony

Origin: Russian 

Meaning: Eagle

8. Ophion

Origin: Greek

Meaning: A serpent

9. Oren

Origin: Gaelic

Meaning: Sale-skinned

10. Orik

Origin: English

Meaning: From the ancient oak tree

11. Orion

Origin: Greek

Meaning: Son of fire, dawning

12. Orville

Origin: French

Meaning: Gold town

13. Oscar

Origin: English

Meaning: God’s spear

14. Otis

Origin: German

Meaning: Wealthy

15. Ourson

Origin: French

Meaning: Little bear

16. Owen

Origin: Celtic

Meaning: Young warrior

17. Oz

Origin: Hebrew 

Meaning: Powerful, courageous

18. Oakley

Origin: English

Meaning: From the oak tree meadow

19. Oba

Origin: African

Meaning: River goddess

20. Ola

Origin: Hawaiian

Meaning: Life

21. Ode

Origin: African

Meaning: Born on the road, during travel 

22. Oana

Origin: Romanian

Meaning: God is gracious

23. Oceana

Origin: Greek

Meaning: Feminine form of Oceanus (In Greek mythology, Oceanus was a Titan father of rivers and water nymphs)

24. Octavia

Origin: Latin 

Meaning: Eighth, feminine form of Octavius

25. Odelia

Origin: French

Meaning: Wealthy, prosperous

26. Odina

Origin: Native American

Meaning: Mountain

27. Odysseia

Origin: Greek

Meaning: Wrathful, wandering; feminine form of Odysseus

28. Ohannah

Origin: Hebrew

Meaning: Gracious gift of God

29. Oibhe

Origin: Irish

Meaning: Olive

30. Okalani​

Origin: Hawaiian

Meaning: Heaven, heavenly

31. Olabsisi

Origin: African

Meaning: Joy Multiplied

32. Oleander

Origin: English

Meaning: Botanical name from an evergreen shrub known for its fragrant white, lavender or pink flowers — and its poison

33. Oleisia

Origin: Greek

Meaning: Protector of man

34. Olga

Origin: German

Meaning: Blessed, holy

35. Olinda

Origin: Greek and Latin 

Meaning: Possible variant of Yolanda; vibrant flower, fragrant, perfumed

36. Olita

Origin: English

Meaning: Winged

37. Olivia 

Origin: Latin

Meaning: Olive tree, feminine of Oliver

38. Olympia 

Origin: Greek

Meaning: From Mount Olympus, Home to the Gods

39. Oma

Origin: Arabic; German

Meaning: Mother, people nation; grandmother

40. Omorose

Origin: Egyptian 

Meaning: Beautiful child 

41. Ona

Origin: Hebrew; Irish

Meaning: Graceful, one

42. Oni

Origin: African

Meaning: Born on holy ground, blessed place

43. Orva

Origin: English; French

Meaning: Brave friend, golden

44. Orlena

Origin: French

Meaning: Gold

45. Orida

Origin: Native American

Meaning: Expected one

46. Oribella

Origin: Latin

Meaning: Beautiful golden child

47. Ora

Origin: Greek; Hebrew

Meaning: Gentle breeze, light

48. Opal

Origin: English

Meaning: Jewel

49. Otrera

Origin: Latin

Meaning: Queen of the Amazons, mother of Penthesilea and Hippolyta in Greek mythology

50. Osanna

Origin: Latin

Meaning: Praise God

RELATED: Not Sure What To Name Your Baby? Here’s What The Most Popular Baby Names Will Be In 2019

In addition to these great baby name ideas, we've compiled a list of the top girls names, boys names, and the overall top names of 2019 to add even more inspiration in your search!

Top 5 girls names for 2018

1. Olivia
2. Amelia
3. Isla
4. Emily
5. Ava

Top 5 boys names for 2018

1. Liam
2. Noah
3. Elijah
4. Logan
5. Mason

Top 100 names of 2019

1. Emma

2. Liam

3. Noah

4. Olivia

5. Ava

6. Isabella

7. Sophia

8. Elijah

9. Logan

10. Mia

11. Mason

12. James

13. Aiden

14. Ethan

15. Lucas

16. Jacob

17. Michael

18. Matthew

19. Benjamin

20. Amelia

21. Charolette

22. Alexander

23. William

24. Daniel

25. Jayden

26. Oliver

27. Carter

28. Sebastian

29. Joseph

30. David

31. Abigail

32. Emily

33. Gabriel

34. Julian

35. Jackson

36. Anthony

37. Harper

38. Evelyn

39. Dylan

40. Wyatt

41. Madison

42. Grayson

43. Isaiah

44. Christopher

45. Joshua

46. Victoria

47. Christian

48. Samuel

49. Andrew

50. Mateo

51. Sofia

52. Jaxon

53. Josiah

54. John

55. Scarlett

56. Luke

57. Aria

58. Ryan

59. Elizabeth

60. Camila

61. Nathan

62. Layla

63. Isaac

64. Owen

65. Ella

66. Henry

67. Levi

68. Aaron

69. Caleb

70. Chloe

71. Zoey

72. Jeremiah

73. Lincoln

74. Landon

75. Adrian

76. Hunter

77. Eli

78. Penelope

79. Skylar

80. Jonathan

81. Thomas

82. Jack

83. Jordan

84. Connor

85. Brayden

86. Cameron

87. Grace

88. Bryce

89. Mila

90. Lillian

91. Aaliyah

92. Jose

93. Lily

94. Paisley

95. Xavier

96. Dominic

97. Bella

98. Nicholas

99. Brooklyn

100. Savannah

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Shelby Slaughter's lifestyle writing has been featured on Martha Stewart, HelloGiggles, Byrdie, and more. She has a zest for storytelling and sharing news with the world.