Jisoo Han (Korean: Han Ji-su, Hangul: 한지수; born c. October 1983) is a South Korean underwater diving instructor who was held in Honduras. She was jailed for 110 days and was placed under house arrest for 306 days in connection with the death of Dutch tourist Mariska Mast at the Honduran island of Roatán. Han proclaimed her innocence and appealed to roommate Daniel Ian Ross, a suspect in the case who fled to Australia, to come forward and exonerate her.