Tolnai or Tolnay is a Hungarian surname. Notable people with these surnames include:
People named Tolnai Gábor Kornél Tolnai (1902–1982), Hungarian-Swedish engineer and inventor Ilona Tolnai-Rákhely (1921–2011), Hungarian sprinter Kálmán Tolnai (1924–2010), Hungarian sailor Márta Tolnai-Erdős (1941–2012), Hungarian gymnast Ottó Tolnai (1940–2025), Yugoslav and Hungarian writer, poet and translator Talida Tolnai (born 1979), Romanian handballer (born 1964), Hungarian chess grandmaster and poker player
People named Tolnay Ákos Tolnay (1903–1981), Hungarian screenwriter, active mainly in Italian cinema Charles de Tolnay (1899–1981), Hungarian art historian Emilie Tolnay (1901–1944), Austrian hairdresser, and a resistance activist Klári Tolnay (1914–1998), Hungarian actress Tiffany Tolnay (born 1987), American collegiate artistic gymnast
See also World lexicon of Tolnai, a Hungarian encyclopedia (1912–1919) New world lexicon of Tolnai, a Hungarian encyclopedia (1926–1933)
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