Sara Kadefors (born 19 September 1965) is a Swedish writer and film director.

Her first novel Långlördag i city, published in 2001, received an award from the Swedish Writers' Union [sv].

Her second novel Sandor Slash Ida, published in the same year, was awarded the August Prize and became the best-selling Swedish young adult novel of all time.

Kadefors has also written a number of novels for adults,[2][1] including Fågelbovägen 32.

[3] Kadefors wrote the script for Allt du önskar, Sveriges Radio's Christmas Calendar for 2011.