During pregnancy, we constantly find ourselves making big decisions. Those decisions may seem daunting, but finding the joys within them is important. While naming your newborn may be one of those daunting decisions, it can also be one of the most exciting. Narrowing down your choices can be challenging, but luckily, we’re here to help you choose the perfect name. If you already know that you are interested in girl names that start with O, or if you are just browsing all the letters to spark some inspiration, this list of O girl names is sure to start you off on the right track.

Baby Girl Names That Start With O

You may be thinking of going more traditional with a name like Olivia, or you might be on the hunt for something super unique, like Odissa. Either way, you’re sure to find the name that suits your baby best.

Popular Girl Names That Start With O

Olivia is by far the most popular name on this list, not only for O girl names but for girl names overall. Still, while O may be one of the most unique letters in the alphabet, there are still some popular and beautiful options to choose from.

1. Olivia

2. Olive

3. Ophelia

4. Oakley

5. Opal

6. Oaklyn

7. Oakleigh

8. Odette

9. Ollie

10. Ocean

Unique Girl Names That Start With O

If you want to steer clear of your baby girl sharing a name with her classmates, you’ve chosen an excellent starting letter with O. You may consider the name Odelet, which means “song,” or Ocie, an adorable name meaning “virtuous girl.”

1. Oba

2. Obdulia

3. Ocarina

4. Oceania

5. Ocie

6. Octaviana

7. Octavianne

8. Octiana

9. Octivia

10. Octoviana

11. Odeelia

12. Odela

13. Odele

14. Odelet

15. Odelette

16. Odelina

17. Odelinda

18. Odeline

19. Odella

20. Odile

21. Odilia

22. Odina

23. Odissa

24. Odolia

25. Odora

26. Odyssa

27. Odyssia

28. Ofeera

29. Ofelja

30. Ofira

31. Ofrat

32. Ofrit

33. Oheo

34. Ohndrea

35. Oksana

36. Ola

37. Olabisi

38. Olathe

39. Oleana

40. Oleisa

More Girl Names That Start With O

If you still haven’t found anything that speaks to you, here are even more girl names that start with O.

1. Oak

2. Oceane

3. Octavia

4. Octavie

5. October

6. Oda

7. Odelia

8. Odell

9. Odelle

10. Odessa

11. Odetta

12. Odila

13. Ofelia

14. Ofilia

15. Ohana

16. Oksana

17. Oleda

18. Oleen

19. Olena

20. Olene

21. Oleta

22. Oletha

23. Olethea

24. Oletta

25. Olevia

26. Olexa

27. Olga

28. Olia

29. Oliana

30. Olianna

31. Olida

32. Oliffe

33. Olimpia

34. Olina

35. Olinda

36. Oline

37. Olisa

38. Olivea

39. Olivera

40. Olivet

41. Olivette

42. Olivia

43. Olivija

44. Olivine

45. Olivya

46. Olla

47. Olsen

48. Oluremi

49. Olva

50. Olwen

51. Olwyn

52. Olwynne

53. Olympia

54. Oma

55. Omega

56. Omolara

57. Omyra

58. Ona

59. Onawa

60. Ondina

61. Ondine

62. Ondra

63. Ondrea

64. Ondria

65. Onee

66. Oneida

67. Onella

68. Oney

69. Oni

70. Onida

71. Onie

72. Onita

73. Onora

74. Onorine

75. Onyx

76. Oona

77. Oonah

78. Opaline

79. Ophelie

80. Ophilia

81. Ophira

82. Oprah

83. Ora

84. Orabella

85. Orabelle

86. Orah

87. Oralee

88. Oralia

89. Oralis

90. Orange

91. Ordell

92. Oreana

93. Orel

94. Orelia

95. Orella

96. Orenthia

97. Oreta

98. Oretha

99. Oretta

100. Oria

101. Oriana

102. Oriane

103. Orianna

104. Orianne

105. Oriel

106. Orielle

107. Orilla

108. Orillia

109. Orina

110. Orinda

111. Oriole

112. Orit

113. Orla

114. Orlagh

115. Orlaith

116. Orlanda

117. Orlee

118. Orlena

119. Orlene

120. Orli

121. Orly

122. Orna

123. Ornella

124. Orpah

125. Orpha

126. Orphia

127. Orphie

128. Orquidea

129. Orra

130. Orsola

131. Ortensia

132. Orya

133. Osanna

134. Otelia

135. Otila

136. Otilia

137. Ottavia

138. Ottilia

139. Ottilie

140. Otylia

141. Ouida

142. Ourania

143. Ovelia

144. Owen

145. Ozara

146. Ozell

147. Ozella

148. Ozie

149. Ozzie

150. Ozzy

You have many gorgeous options if you are looking for an O girl name. Whether you want to name her after celebrities, like Olivia Rodrigo, or opt for something more unisex like Ollie, you’re sure to find something perfect. If any of these names spoke to you, jot them down and add them to your list.

Be sure also to take a peek at some of our other baby name lists, like our Top 200+ Coolest Baby Girl Names, flower names for girls, and beautiful girl names. Have fun choosing a name you love for your baby girl!