ANNEX I LIST OF THIRD COUNTRIES WHOSE NATIONALS ARE REQUIRED TO BE IN POSSESSION OF A VISA WHEN CROSSING THE EXTERNAL BORDERS OF THE MEMBER STATES
Quoted from the source.
Before you go
Passport validity
Your passport must be valid for at least 3 months.
The travel document which a third-country national is using to enter Croatia must be valid for at least another three months after the planned departure from Croatia and issued within the previous 10 years
Tourist entry only
These rules cover tourist visits. Work, study and transit follow other rules.
The other way round
What Croatia passport holders need to visit the Gambia.
Croatia passport Gambia
Visa-free · 90 days
Maximum stay
Up to 90 days
LIST OF COUNTRIES IN THE EXEMPTION LIST EU MEMBER STATES 1. Austria 2. Belgium 3. Bulgaria 4. Croatia 5. Cyprus 6. Czech (Czech Republic) 7. Denmark 8. Estonia 9. Finland 10. France 11. Gennany 12. Greece 13. Hungary 14. Ireland 15. Italy 16. Latvia 17. Lithuania 18. Luxembourg 19. Malta 20. Netherlands 21. Poland 22. Portugal 23. Romania 24. Slovakia 25. Slovenia 26. Spain 27. Sweden 28. Switzerland