200 Baby Boy Names That Start With O

It’s what some might call the most exciting time in your life – you’re expecting a baby! Your feelings are probably all over the place by now, which is entirely normal. Excited for what’s to come but nervous at the same time – it can be hard to keep all those emotions in check when making the big decisions you’ll need to make throughout your pregnancy. One of those big decisions you’ll have to make is what name you’ll choose, and how exciting is that? If you’re looking for baby boy names that start with O, you’ve come to the right place.

Baby Boy Names That Start With O

There are so many names out there that it can easily become overwhelming when trying to pinpoint which one you want to go with. Google searches can be redundant, and it might feel like you might never find “the one,” but we’re here to help. If you’re expecting a son and looking for O names for boys, you’ve come to the right place. We’ve compiled a list of boy names that start with O.

Celebrity Boy Names That Start With O

Celebrities seem to love O names for their babies, which gives you a lot of celeb inspiration to choose from. Big names like Nick Carter, Isla Fischer, and Olivia Wilde have chosen O names for their little ones. And even a few royals have taken to O, with Crown Princess Victoria and Prince Daniel of Sweden naming their baby Olaf (not to be confused with the character from Frozen). See the names they chose and more celebrity baby names below.

Ode – child of Jena Malone and Ethan DeLorenzo
Odie – child of Ashley Williams
Odin – child of Nick Carter and Lauren Kitt Carter
Olaf – child of Crown Princess Victoria and Prince Daniel of Sweden
Olive – child of Isla Fisher and Sacha Baron Cohen
Oliver – child of Fred Savage
Olympia – child of Kasi Bennett and Usain Bolt
Onyx – child of Iggy Azalea and Playboi Carti
Oonagh – child of Amber Heard
Orion – child of Chris Noth
Orrin – child of Josh Homme and Brody Dalle
Orson – child of Lauren Ambrose
Oscar – child of Gordon Ramsey
Osian – child of Milla Jovovich and Paul W.S. Anderson
Oskar – child of Nate Berkus and Jeremiah Brent
Otis – child of Olivia Wilde and Jason Sudeikis
Otto – child of Rachael Harris
Owen-Lee – child of Shiri Appleby and Jon Shook
Ozzie – child of Max Greenfield
Read here for more celebrity baby names

Popular Boy Names That Start With O

The letter O yields quite a few super unique names, like Oberon and Obi, but if you want a name that is a bit more popular, there are some great O names to choose from.

1. Oliver

2. Oscar

3. Owen

4. Otis

5. Ollie

6. Otto

7. Omar

8. Oakley

More Boy Names That Start With O

If you still haven’t found an O name that speaks to you, there are many more below, including some unique spellings of the more popular names above. We are privy to Orlando, which means “land of gold,” and Orie, which means “gold town.”

1. O’Brien

2. O’Keefe

3. O’Shay

4. Oak

5. Oakes

6. Oaklee

7. Oakleigh

8. Oaks

9. Obadiah

10. Obafemi

11. Obama

12. Obasi

13. Obed

14. Obediah

15. Oberon

16. Obert

17. Obi

18. Obie

19. Ocia

20. Octave

21. Octave

22. Octavian

23. Octavio

24. Octavious

25. Octavius

26. Octavus

27. Oden

28. Odell

29. Odhran

30. Odile

31. Odilon

32. Odis

33. Odon

34. Odysseus

35. Ofir

36. Ogden

37. Ohad

38. Ohene

39. Oisin

40. Okechukwu

41. Okeke

42. Okpara

43. Ola

44. Olatokunbo

45. Olatunde

46. Olav

47. Olavi

48. Olbert

49. Ole

50. Oleg

51. Oleksiy

52. Olen

53. Olexa

54. Olin

55. Olindo

56. Oliverio

57. Olivier

58. Olivio

59. Olle

60. Olliver

61. Olof

62. Olsen

63. Olufemi

64. Olujimi

65. Olukayode

66. Olumide

67. Olusegun

68. Olushola

69. Olutosin

70. Oluwatobi

71. Oluyemi

72. Olyn

73. Omario

74. Omer

75. Omero

76. Omid

77. Omotunde

78. Omri

79. Ona’je

80. Ondray

81. Ondre

82. Ondrej

83. Oneal

84. Oneil

85. Onesimo

86. Onofre

87. Onofrio

88. Onorio

89. Onslow

90. Ophir

91. Or

92. Ora

93. Oran

94. Orazio

95. Ordell

96. Orel

97. Oren

98. Orenthal

99. Oreste

100. Orestes

101. Orie

102. Orin

103. Orland

104. Orlando

105. Orley

106. Orlin

107. Orlondo

108. Orman

109. Ormand

110. Ormando

111. Ormond

112. Oron

113. Orpheus

114. Orphie

115. Orran

116. Orrel

117. Orren

118. Orrie

119. Orry

120. Orsen

121. Ortiz

122. Orton

123. Orval

124. Orvalle

125. Orvell

126. Orvil

127. Orville

128. Orvin

129. Orwin

130. Oryon

131. Osama

132. Osbert

133. Osborne

134. Osbourne

135. Osburn

136. Osei

137. Osgood

138. Oshea

139. Osher

140. Osiris

141. Osker

142. Osman

143. Osmar

144. Osmin

145. Osmund

146. Osric

147. Ossian

148. Ossie

149. Osten

150. Ostin

151. Ostyn

152. Osvaldo

153. Osvin

154. Oswald

155. Oswaldo

156. Oswell

157. Oswin

158. Oswyn

159. Ota

160. Otello

161. Otha

162. Othello

163. Othman

164. Othmar

165. Othniel

166. Otho

167. Otniel

168. Ottavio

169. Oved

170. Overton

171. Ovid

172. Ovie

173. Owain

174. Owens

175. Owin

176. Owynn

177. Oz

178. Ozwald

What do you think about these boy names that start with O? What’s your favorite (or least favorite) name from this list? Maybe you found the one or you need to keep searching. If so, take a peek at some of our other baby name lists, like our top baby names for 2022, unique and trendy boy names, and the coolest boy names. Have fun choosing a beautiful name you love for your baby boy!