Dusík or its variant Dussek is a Czech surname. Notable people with the surname include:
Jan Dusík (born 1975), Czech politicianJan Ladislav Dussek (1760–1812), Czech composer and pianistJoanna Dusik (born 1989), Polish skaterKaterina Veronika Anna Dusíkova (1769–1833), also known as Veronika Dussek, Czech composer and pianist, sister of J. L. DussekOlivia Buckley (1799–1847), also known as Olivia Dussek, English composer and harpist, daughter of J. L. DussekSophia Dussek (1775 – c. 1831), also known as Sophia Corri, Scottish composer, soprano and harpist, wife of J. L. Dussek