Category:Nominal Categories
Feature:Definite Articles WALS
Name:No definite, but indefinite article
Languages (62):
Conlangs (52):
Ayeri
Lembrin
Ngengenoef
Ryupisasa
Dainyu
Tersales
Classical Rossan
project 1
Zanese
Stemmutsian
TIAL
Thiuas
Denaden
Kiassan Turasta
Aaro
Dzidmitsu
Proto-Qephex
Renge-Terra
Rarlang
Tlaymyts
Popsiclian
Marag
Enterdese
Omluuet
donawean
Dahawj
Begonian
Oedilaiffe
Kuty
Eiyrnas
Lwaitel
Ndatshok
Suiacuili
Arcaicam Esperantom
Tsatsar
Qrai
Lortho
ExoticLang
Shurs
Least Average
PURK
Nonlen
Glosa
Nkarkoa
Dladwu
Laiqbun
Akxera
Ta Ti
Soc'ul'
Keltsvian
Standard Knrawi
Latejami 
It's possible but unusual to use a demonstrative as a definite article.

Natlangs (10):
Japanese
Turkish
Amele
Jakaltek
Kobon
Lango
Lezgian
Persian
Thai
Yaqui