Baby Boy Names That Start With O

Looking for baby boys names that start with O? Browse our complete list of boy names beginning with the letter O, ranked by all-time popularity based on Social Security Administration data.

Whether you're looking for classic boy names that start with O or unique options, you'll find hundreds of choices below with their total birth counts.

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Rank Name Total Births
1 Oliver 254,854
2 Owen 238,411
3 Oscar 211,463
4 Omar 105,100
5 Otis 60,653
6 Orlando 49,177
7 Otto 38,669
8 Orville 35,051
9 Orion 22,098
10 Ollie 17,414
11 Odell 14,860
12 Osvaldo 14,394
13 Omari 12,756
14 Odin 12,669
15 Octavio 11,294
16 Oakley 10,685
17 Olin 9,842
18 Oren 9,326
19 Omer 8,784
20 Odis 8,214
21 Orval 7,915
22 Olen 7,632
23 Otha 6,386
24 Orin 6,198
25 Onyx 5,954
26 Orrin 5,922
27 Oswaldo 5,861
28 Ora 5,616
29 Ottis 4,458
30 Oran 4,428
31 Oswald 4,339
32 Obie 4,155
33 Obed 4,063
34 Ocean 4,030
35 Omarion 3,954
36 Osman 3,711
37 Ozzy 3,628
38 Octavius 3,614
39 Osiris 3,391
40 Otho 3,328
41 Oskar 3,148
42 Ozzie 3,088
43 Osbaldo 3,078
44 Oneal 3,043
45 Osiel 2,872
46 Oral 2,802
47 Ocie 2,738
48 Olan 2,718
49 Odie 2,606
50 Orson 2,586
51 Olaf 2,525
52 Oziel 2,488
53 Obadiah 2,416
54 Om 2,255
55 Osmar 2,244
56 Ole 2,101
57 Orland 2,081
58 Olivier 1,936
59 Orvil 1,935
60 Oneil 1,749
61 Osborne 1,731
62 Ozell 1,720
63 Orie 1,715
64 Ozias 1,682
65 Ossie 1,677
66 Oris 1,661
67 Orlin 1,660
68 Octavious 1,651
69 Ori 1,540
70 Oden 1,499
71 Okey 1,462
72 Octavian 1,428
73 Oakland 1,247
74 Oshea 1,173
75 Orvel 1,157
76 Orvin 1,140
77 Oryan 1,093
78 Otoniel 1,060
79 Ovidio 1,058
80 Osama 961
81 Orlan 953
82 Oaklee 941
83 Orvis 940
84 Orris 939
85 Ozie 933
86 Orlo 920
87 Orren 918
88 Orman 886
89 Ontario 877
90 Omri 863
91 Obinna 858
92 Ogden 801
93 Omega 791
94 Olivia 781
95 Omid 780
96 Owyn 759
97 Osie 748
98 Ovid 741
99 Owens 733
100 Othel 732