Girl Names That Start with O

55 namesGirl

O names for girls are relatively rare, which gives them a distinctive, memorable quality. Olivia is the best known, a name used by Shakespeare in Twelfth Night and linked to the olive tree, a symbol of peace. Olive is its simpler, vintage-feeling relative. Ophelia is the tragic heroine of Hamlet, and Ofelia is its Spanish form. Octavia comes from a Latin word for eighth and was carried by women of ancient Rome.

The letter also includes a lively group of nature names. Oaklynn, Oaklyn, Oaklee and Oakleigh all draw on the oak tree, a symbol of strength, and show how parents like to shape nature words into new names. Opal is a gemstone known for its shifting colors. Odette is the swan princess of the ballet Swan Lake, and Oriana is often linked to words for gold or dawn. Odessa takes its name from the port city on the Black Sea, and Olga is a Slavic name with Norse roots. Olyvia is a modern spelling of Olivia.

Because these names begin with a rounded vowel, they can blend with surnames that also start with a vowel. Spelling is a consideration for the oak-based names, which come in many versions, so decide early which one you prefer and say the full name aloud with your surname.

Most popular right now

Olivia Girl
oh-LIH-vee-uh
“olive” · Latin
#1
Olive Girl
AH-lihv
“olive tree” · English
#197
Oaklynn Girl
OHK-lin
“modern blend of oak and Lynn” · American (modern coinage)
#153
Ophelia Girl
oh-FEEL-yuh
“help” · Greek
#264
Octavia Girl
ahk-TAY-vee-uh
“eighth” · Latin
#308
Oaklee Girl
OHK-lee
“oak meadow” · American (modern coinage)
#535
Opal Girl
OH-puhl
“opal, the gemstone” · Sanskrit
#423
Oaklyn Girl
OHK-lihn
“blend of Oak and Lynn” · American (modern coinage)
#637
Oakleigh Girl
OHK-lee
“oak clearing” · American (modern coinage)
#668
Odette Girl
oh-DEHT
“wealth, fortune” · French
#883

All 55 names

Sorted by current popularity. US rank uses 2025 data for the name's most common sex; the trend compares births with five years earlier. Tap a column heading to re-sort.

Name Meaning Origin US rank 2025 5-yr trend
Olivia olive Latin 1 ↓ -23%
Olive olive tree English 197 ↑ +7%
Oaklynn modern blend of oak and Lynn American (modern coinage) 153 ↑ +89%
Ophelia help Greek 264 ↑ +49%
Octavia eighth Latin 308 ↑ +6%
Oaklee oak meadow American (modern coinage) 535 ↑ +20%
Opal opal, the gemstone Sanskrit 423 ↑ +66%
Oaklyn blend of Oak and Lynn American (modern coinage) 637 ↓ -13%
Oakleigh oak clearing American (modern coinage) 668 ↑ +34%
Odette wealth, fortune French 883 ↑ +109%
Oriana uncertain; perhaps 'golden' Latin 1,791 ↑ +38%
Odessa from the Ukrainian city Odessa Greek 1,197 ↑ +47%
Olyvia variant of Olivia, olive tree American (modern coinage) 3,283 ↓ -26%
Olga holy, blessed Russian 3,201 ↓ -7%
Ofelia Spanish form of Ophelia, help Spanish 2,148 → +2%
Oona from Irish Úna, possibly lamb or unity Irish 2,768 ↓ -18%
October the month; from Latin for eighth English 3,758 ↓ -29%
Odalys Spanish-American name of uncertain origin Spanish 3,821 ↑ +86%
Olympia from Olympia, sanctuary of Zeus Greek 2,210 ↑ +20%
Orianna golden Latin 3,094 ↑ +47%
Odalis modern Spanish name, uncertain origin Spanish 9,306 ↓ -8%
Orla golden princess Irish 2,532 ↑ +119%
Oceana ocean Latin 3,562 ↑ +59%
Odelia praise God, or wealthy Hebrew 2,985 ↑ +51%
Ora light (Hebrew) or pray (Latin) Hebrew 3,760 ↑ +18%
Ona Lithuanian form of Anna, "grace" Hebrew 5,868 → -4%
Oliva olive; variant of Olivia Latin 7,059 ↓ -30%
Ottilie fortune, wealth German 2,951 ↑ +200%
Oksana Slavic form of Xenia, hospitality Russian 7,404 ↑ +15%
Ola several possible sources Norwegian 8,227 ↓ -7%
Oralia uncertain, possibly golden Spanish 8,737 ↑ +20%
Onalee blend of Ona and Lee American (modern coinage) 11,664 ↓ -33%
Otilia form of Ottilie, wealth Spanish 6,492 ↑ +64%
Odilia wealth, fortune Germanic 7,058 ↑ +167%
Olevia variant of Olivia, olive Latin — new
Oneida name of an Iroquois nation Native American — new
Ozella uncertain, modern Southern name American (modern coinage) 12,853 ↓ -53%
Ova uncertain, vintage Southern name American (modern coinage) — ↓ -100%
Orpha variant of Orpah Hebrew — new
Oma uncertain; possibly Arabic, commander — — new
Olinda uncertain; possibly Germanic Portuguese — new
Oleta uncertain; possibly from Alethea American (modern coinage) — new
Omie uncertain; possibly a pet form of Naomi American (modern coinage) — new
Ottie pet form of Ottilie or Otto Germanic — new
Onnie old pet name, origin uncertain English — new
Ouida childish form of Louisa English — new
Onie uncertain pet form American (modern coinage) — new
Oda Germanic, wealth German — new
Oneta uncertain; American coinage American (modern coinage) — new
Olene uncertain; American name American (modern coinage) — new
Oletha uncertain; American coinage American (modern coinage) — new
Otelia variant of Otilia, wealth Spanish — new
Onita uncertain; American name American (modern coinage) — new
Oretha uncertain; related to Aretha American (modern coinage) — new
Orene uncertain; American name American (modern coinage) — new