Hello And Other Greetings

Dutch:
Hallo (Netherlands, Belgium)
Dag (Netherlands, Belgium)
Hoi (Netherlands, Belgium)
Morgen (Netherlands)
Môge (Netherlands)
Goedendag (Netherlands)
Goeiedag (in spoken language)(Netherlands)
Hai (rarely used)(Netherlands)
Helaba (informal by youth)(Belgium)
Yoe (informal by youth)(Belgium)
Hiya (informal by youth)(Belgium)

Greek:
Geia sou (Greece, Cyprus)
Geia sas (Greece, Cyprus)
Geia (Greece, Cyprus)

French:
Bonjour (Europe, Africa, Canada)
Salut (Europe, Africa, Canada)

Finnish:
Päivää(Finland)
Terve (Finland)
Moi (informal, common)(Finland)
Hei (informal, common)(Finland)
Moikka (informal)(Finland)
Hyvää päivää (formal)(Finland)

Polish:
Dzien dobry (Poland)
Czesc (familiar)(Poland)
Czolem (Poland)
Serwus (Poland)