Radecki (feminine Radecka) is a Polish surname. Notable people include:
Adam Radecki (born 1994), Polish footballer Barbara Radecki, Canadian actress Jan Mikulicz-Radecki (1850–1905), Polish-Austrian surgeon John Radecki (1865–1955), Australian stained-glass artist Mateusz Radecki (born 1993), Polish footballer Milena Radecka (born 1984), Polish volleyball player Olga Radecki (1858-1933), Russian composer, conductor and pianist Thomas Radecki (born 1946), former American psychiatrist Zuzanna Radecka (born 1975), Polish sprinter Roman Radecki (born 2007), Amercian Collegiate long distants runner