Category:Nominal Categories
Feature:Indefinite Articles WALS
Name:Indefinite word same as 'one'
Languages (105):
Conlangs (88):
Terkunan
Regimonti
Qahta
Neo Patwa
Ghaf
Altian
Ngengenoef
Neo-Khitanese
Tersales
Imuthan
Feayran
Austrian
Annese
Ruzian
Fila
Theadish
Phanyo
Gac
Denaden
Lemohai
Shuran
Larler
Laroitian
Proto-Qephex
Endehl
Cenemanian
Dhannuá
Lonmai Luna

the word cluster for "one" may appear with indifinite singular nouns.

Olgittic
Tlaymyts
Lodeen
Indefinite article is "ne", plural "ni". It is placed before the noun, and isn't mandatory as an absence of definite prefix might as well indicate the indefinite property of the object.
Austrian Celtic
toka na musume
Nayraki
Town Speech
Kopfberger German
Sarikan
Latha
Tslure Thujekatsoth
Marag
Duemál
Okuna
Massalian
Interlingua
kolesch Speech
Alakulian
Femmish
Phitonic
Antiranto
Hellanan
Barthian
Spanglo
Arveyran
Khanese
Kaidu
Aingeljã
Caryatic
Jumban
Proto-Toroq
Averagelang
Spraka
Hy'Bae
Qhirem
Delniit
Valthungian
Proto-Tampoluric
Arcaicam Esperantom
Velan
Lingua Franca Nova
Tsatsar
Omnizzabon
EML
Thosk
Carrajina
Qrai
Lortho
Dwarvish
Wistanian
Dunia
Seignuric
Kayronic
Vayardyio
Nylaf
Novial
Intal
Interlingue (Occidental)
Empolese
Tangachi
In the singular only. (art.def.sg = sam = 1)

Natlangs (17):
French
Spanish
Turkish
Abkhaz
German
Greek (Modern)
Hebrew (Modern)
Hmong Njua
Jakaltek
Kayardild
Kannada
Latvian
Lavukaleve
Lezgian
Meithei
Ndyuka
Rapanui