Speleological Section Velebit
- Section of mountaineering group of Zagreb University and founded in 1954. Offers camps and expeditions. Includes history of SOV, photos and contacts. [Croatian and English].
- http://public.carnet.hr/speleo/sov/eng/

The Speleological Committee of the Croatian Mountaineering Association (Komisija za speleologiju)
- Founded in 1956 and coordinates work of clubs in Croatia. Offers education, publications and camps. Includes contacts. [Croatian and English].
- http://public.carnet.hr/speleo/eng/komisija.html

Croatian Speleological Federation
- Provides links to societies and clubs.
- http://public.carnet.hr/~mgarasic/hsd.htm

Speleological Group SISMIS
- Based in Zapresic and aiming to promote speleology and related natural sciences among school children. Includes, history, project information, excursions and contact details.
- http://www.os-antunaaugustincica.hr/sgs/English/indexe.htm

Caving Club Samobor
- Caving mainly in the area around Mt. Zumberak. Inlucdes club activities, karst and caves research projects, expeditions, caving school, info about caves in Croatia.
- http://www.speleo-klub-samobor.hr/club.htm