Ơ

{{Short description|Latin letter O with horn; used in Vietnamese}}

{{Infobox grapheme|name=O with horn

|image=File:Latin letter O with horn.svg

|imageclass=skin-invert-image

|script=Latin script

|language=Vietnamese

|phonemes=[{{IPAlink|ə}}]

|variations=O+, O*

|sisters=Ờờ, Ớớ, Ởở, Ỡỡ, Ợợ|direction=Left to Right

|fam1=O o

|type=alphabet|typedesc=ic|letter=Ơ ơ}}

Ơ (lowercase ơ) is one of the 12 Vietnamese language vowels. It represents the sound {{IPAblink|ə}}, the schwa.{{cite web|url= https://www.compart.com/en/unicode/U+01A0|title=Unicode Character “Ơ” (U+01A0)|work=Compart |publisher=Compart AG | place= Oak Brook, IL|date=2021 |accessdate=2024-02-29}}

As with most special Vietnamese letters, this letter is not well-supported by fonts and is often typed as either o+ or o*. The VIQR standard is o+.

On the Windows default Vietnamese keyboard Ơ can be found on where the ] key is on a US English keyboard layout.

Because Vietnamese is a tonal language this letter may optionally have any one of the five tonal symbols above or below it, as in phở.

• Ờ ờ
• Ớ ớ
• Ở ở
• Ỡ ỡ
• Ợ ợ

Ơ and Ư were in the past used for Thai Romanization, but are now written as oe and ue.