Stanislawa Zawadzka, also known as Zavaska or Stani, (5 February 1890 in Warsaw – 21 July 1988 in Skolimów) was a Polish soprano singer.
She was a soloist at La Scala in Milan, Covent Garden in London (1923 to 1935) and Poznan Opera.
In 1955, she was a professor at the National Music School in Warsaw (Panstwowa Wyzsza Szkola Muzyczna w Warszawie; PWSM).
After World War II, she lectured at the National Music School in Kraków and the National Music School in Warsaw.