Irish Boy Names Starting With O
Arrival of a new baby is cause for celebration and happiness. It is beginning of new chapter your life. Our warm wishes for all the love and happiness in your life.
Check our list of names for Irish boy names starting with O letter with meaning for your loved ones.
Explore our list and get the right one for your little kid.
Irish Baby Boy Names That Start With O Letter & Meaning (List 1)
Let's checkout below list, what are the Irishbabyboy names starting with O letter with meaning and usage.
| Name | M/F | Meaning |
|---|---|---|
| O'brian |  |
Meaning : Surname. Used in : Irish |
| O'brien | |
Meaning : Surname. Used in : Irish |
| O'keefe | |
Meaning : Surname. Used in : Irish |
| O'shay | |
Meaning : Surname. Used in : Irish |
| O'shea | |
Meaning : Surname. Used in : Irish |
| Ockan | |
Meaning : Brown Horse, Horse Lover Used in : Irish |
| Ockey | |
Meaning : Horseman Used in : Irish |
| Ockvilly | |
Meaning : Horse Soldier Used in : Irish |
| Odanodan | |
Meaning : Of The Red Earth Used in : Irish |
| Odar | |
Meaning : Dark, Grey-brown Used in : Irish |
| Odell | |
Meaning : Surname. Used in : American, African, Anglo, English, French, German, Greek, Greek, Irish, Jamaican, Norse, American, Australian, British |
| Odhar | |
Meaning : Dark, Grey-brown Used in : Celtic, Irish |
| Odhran | |
Meaning : Little Pale Green One Used in : Celtic, Irish |
| Odran | |
Meaning : Pale Green Used in : Australian, Celtic, French, Gaelic, Irish |
| Oengus | |
Meaning : Excellent, Strength, Vigour, Dream, Swan Used in : Irish |
| Oengusa | |
Meaning : Unique Choice, Chosen One Used in : Irish |
| Ogan | |
Meaning : Youth, Lad Used in : Hindu, Turkish, Irish |
| Oilibhear | |
Meaning : Relic, Heir To His Ancestors Used in : Irish, Norse |
| Oilleog | |
Meaning : A Sprite, Elf Used in : Irish |
| Oisin | |
Meaning : Little, Freckled Used in : Australian, Celtic, Irish |
| Oison | |
Meaning : A Deer Used in : Irish |
| Oissene | |
Meaning : A Deer Used in : Irish |
| Oissine | |
Meaning : A Deer Used in : Irish |
| Oistin | |
Meaning : Venerable Used in : Hindu, Irish, Irish, Latin |
| Olaf | |
Meaning : Ancestor's Heirloom Used in : Australian, Swedish, Danish, French, German, Irish, Norse, Norwegian, Polish, Scandinavian, Swiss, Teutonic |
| Olan | |
Meaning : Royal Forefather Used in : American, Kurdish, French, Irish, Australian |
| Olave | |
Meaning : Ancestor's Relic Used in : German, German, Irish, Norse, Scandinavian |
| Olchobar | |
Meaning : Ruler's Name Used in : Celtic, Irish |
| Olibhear | |
Meaning : Seller And Processor Of Olive Oil Used in : Irish |
| Oliver | |
Meaning : Olive Tree Used in : American, Australian, Chinese, British, Danish, Dutch, English, Finnish, French, German, Irish, Jamaican, Latin, Norse, Swedish, Swiss, Australian |
| Onan | |
Meaning : Wealthy Used in : Japanese, Turkish, Irish |
| Onchu | |
Meaning : Fierce Hound Used in : Irish |
| Oney | |
Meaning : Honored, Honorable Used in : Irish, African, Australian |
| Oonan | |
Meaning : Strength, Power Used in : Irish |
| Oran | |
Meaning : Battle, Rule, Soldier Used in : American, Hawaiian, Australian, Hebrew, Irish, British, Celtic, English, Gaelic, Irish |
| Oren | |
Meaning : Pale Green, Fair, Pale-skinned. Used in : American, Hawaiian, Hindu, Hebrew, Japanese, Gaelic, Irish, Jewish |
| Orin | |
Meaning : Dark, Hair, Haired Used in : American, Australian, Hebrew, Celtic, Gaelic, Greek, Irish, Australian |
| Ormand | |
Meaning : Red. Used in : Australian, British, English, Gaelic, German, Irish |
| Ormond | |
Meaning : Red. Used in : American, British, English, French, Gaelic, German, Irish, Teutonic |
| Ormonde | |
Meaning : Red. Used in : British, English, French, Gaelic, German, Irish |
| Ornait | |
Meaning : Battle, Battler, Ulster Used in : Irish, Irish |
| Orran | |
Meaning : Pale Green Used in : American, British, English, Gaelic, Irish |
| Orren | |
Meaning : Pale Green, Fair, Pale-skinned. Used in : American, Hebrew, British, English, Gaelic, Irish |
| Orrin | |
Meaning : Pale Green, Fair, Pale-skinned. Used in : American, Australian, Hebrew, British, English, Gaelic, Greek, Irish |
| Orthanach | |
Meaning : Potent in prayers or charms Used in : Irish |
| Oscar | |
Meaning : Divine Spear, Dear Friend, Lover Of Deer Used in : American, Australian, Chinese, British, Celtic, Danish, Dutch, English, French, German, Irish, Jamaican, Italian, Norse, Norwegian, Portuguese, Scandinavian, Swedish, Swiss, Australian, Dutch |
| Osgar | |
Meaning : God Spear, Gentle Friend Used in : Australian, British, Celtic, English, Irish |
| Osgur | |
Meaning : Divine Spear, Dear Friend, Spear Of The Gods Used in : Irish |
| Osheen | |
Meaning : Young Deer Used in : Celtic, Irish |
| Ossan | |
Meaning : Little, Deer Used in : Irish |
| Ossian | |
Meaning : Young Deer, Little Deer Used in : Australian, Celtic, Danish, Finnish, Irish, Latin, Swedish |
| Otteran | |
Meaning : Prosperous, Wealthy Used in : Celtic, Irish |
| Ounam | |
Meaning : Little Adam Used in : Celtic, Irish |
| Owen | |
Meaning : Born Of Yew, Well Born Used in : American, Australian, British, Celtic, Danish, Dutch, English, French, German, Greek, Irish, Jamaican, Swedish, Welsh, Australian |
| Owney | |
Meaning : Green Elderly Used in : Irish |
| Ownry | |
Meaning : Ruler Of The State Used in : Irish |