O yes
Oja is the family name of the following people:
- Eduard Oja (1905–1950), Estonian composer
- Hannes Oja (1919–2012), Estonian journalist and poet
- Kristjan Oja (* 1968), Estonian biathlete
- Mihkel Oja (* 1996), Estonian ski jumper
- Peeter Oja (* 1960), Estonian actor and comedian
- Regina Oja (* 1996), Estonian biathlete
Oja is the name of the following rivers:
in Spain:
- Oja (river) , in the La Rioja region, Spain
in Russia:
- Oja (Jenissei) , tributary of the Yenisei
- Oja (Maly Taschtyp) , tributary of the Maly Taschtyp
- Oja (Njuk) , tributary of Lake Njuk in Karelia
OJA stands for:
- Local youth committee , a local meeting of IG Metall youth
