Castaway: Kaôh Rōng

 is the fourth season of Castaway and was produced on December 13th, 2020.

The season borrowed elements from the CBS reality television competition Survivor. Hosted by Robert, it consisted of sixteen competitors.

The two tribes were named Chan Loh and To Tang after islands in Cambodia. When eight competitors remained, the two were merged to the To Loh tribe named by Toole which was a portmanteau of Chan Loh and To Tang. The jury vote ended in a tie between two competitors for the first time in Castaway with Marcus and Beth receiving three votes each. The third finalist, Toole, broke the tie in favor of Marcus thus making him the Sole Castaway.

The season introduced Exile Island, inspired by a concept used in the American franchise of Survivor. Each round, one competitor would be chosen from the losing tribe to search for an advantage or can choose to remain at Exile Island and bypass Tribal Council.

Production
Robert confirmed his intention to host Castaway for a fourth season on completion of Castaway: Philippines. Alumni Jocelyne from Castaway: Pearl Islands and Joshua from Castaway: Philippines participated as room moderators.