This is a list of settlements in the Kilkis regional unit in Greece:
- Agia Paraskevi
- Agios Markos
- Agios Petros
- Akritas
- Amaranta
- Anavryto
- Anthofyto
- Antigoneia
- Aspros
- Axiochori
- Axioupoli
- Cherso
- Chorygi
- Chrysopetra
- Drosato
- Efkarpia
- Eiriniko
- Elliniko
- Eptalofos
- Evropos
- Evzonoi
- Fanos
- Filyria
- Fyska
- Gallikos
- Gerakari
- Gorgopi
- Goumenissa
- Griva
- Idomeni
- Iliolousto
- Isoma
- Kampanis
- Karpi
- Kastaneri
- Kastanies
- Kato Theodoraki
- Kentriko
- Kilkis
- Koiladi
- Kokkinia
- Korona
- Koronouda
- Kristoni
- Leipsydrio
- Limnotopos
- Livadia
- Mandres
- Mavroneri
- Megali Sterna
- Megali Vrysi
- Melanthio
- Mesia
- Mesiano
- Mikro Dasos
- Mikrokampos
- Mouries
- Myriofyto
- Nea Santa
- Neo Agioneri
- Neo Gynaikokastro
- Palaio Agioneri
- Pedino
- Pefkodasos
- Pentalofo
- Plagia, Kilkis
- Plagia, Paionia
- Polykastro
- Polypetro
- Pontoirakleia
- Pontokerasia
- Ryzia
- Skra
- Stathis
- Stathmos Mourion
- Stavrochori
- Terpyllos
- Theodosia
- Toumpa
- Tripotamos
- Vafiochori
- Vaptistis
- Vathy
- Xylokeratia
By municipality
| Subdivisions of the municipality of Kilkis | |
|---|---|
| Municipal unit of Cherso |
|
| Municipal unit of Doirani | |
| Municipal unit of Gallikos | |
| Municipal unit of Kilkis |
|
| Municipal unit of Kroussa | |
| Municipal unit of Mouries |
|
| Municipal unit of Pikrolimni |
|
| Subdivisions of the municipality of Paionia | |
|---|---|
| Municipal unit of Axioupoli | |
| Municipal unit of Evropos |
|
| Municipal unit of Goumenissa |
|
| Municipal unit of Livadia |
|
| Municipal unit of Polykastro |
|