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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All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Rank Name Total Births
401 Onesimus 50
402 Olli 49
403 Oso 49
404 Orwin 49
405 Olayinka 49
406 Obeth 48
407 Onathan 47
408 Orvall 47
409 Oatis 46
410 Ofir 46
411 Ohaji 45
412 Oman 45
413 Osyris 45
414 Orr 45
415 Orba 44
416 Orban 44
417 Osean 43
418 Onel 43
419 Onan 43
420 Otie 42
421 Oras 42
422 Orven 42
423 Orbra 42
424 Orison 41
425 Olavi 41
426 Olujimi 41
427 Osian 41
428 Obaida 41
429 Oakly 40
430 Ove 40
431 Oshun 39
432 Oluwajomiloju 39
433 Olav 38
434 Onterio 38
435 Oluseyi 38
436 Omoro 38
437 Othoniel 37
438 Omareon 37
439 Olajide 37
440 Odom 37
441 Or 37
442 Orben 36
443 Ozai 36
444 Ostap 36
445 Ozmar 36
446 Onterrio 36
447 Osagie 36
448 Omen 36
449 Olijah 35
450 Omeir 35
451 Ollyver 35
452 Ovi 34
453 Odyssey 33
454 Ollice 33
455 Oladimeji 33
456 Obada 32
457 Olton 32
458 Oliva 32
459 Obryant 31
460 Odhran 31
461 Ostyn 30
462 Obama 30
463 Osbon 30
464 Obai 30
465 Orenthial 29
466 Oji 29
467 Othie 29
468 Oceano 29
469 Oria 29
470 Onas 29
471 Olee 28
472 Oshai 28
473 Oconnor 28
474 Ozwald 28
475 Oshawn 28
476 Ovel 28
477 Oluwatomi 28
478 Orbelin 27
479 Orvid 27
480 Oghenetega 27
481 Ode 27
482 Oluwakorede 26
483 Oza 26
484 Ommar 26
485 Oscer 26
486 Onecimo 26
487 Olindo 26
488 Ordie 26
489 Obet 26
490 Omaid 25
491 Oluwapelumi 25
492 Ozion 25
493 Owsley 25
494 Onir 25
495 Obrempong 24
496 Oc 24
497 Osmund 24
498 Olalekan 24
499 Olek 24
500 Ormal 24