Turnovský is a Czech surname, meaning "Turnov's". Notable people with the surname include:
Frederick Turnovsky (1916–1994), New Zealand manufacturer, entrepreneur, advocate and community leader Jan Trojan Turnovský (before 1550 – 1606), Czech composer Jaromír Turnovský (1912–?), Czech speed skater Josef Turnovský (born 1922), Czech table tennis player Martin Turnovský (1928–2021), Czech conductor Stephen J. Turnovsky (born 1941), New Zealand economist