The Andre Norton Nebula Award for Middle Grade and Young Adult Fiction (formerly the Andre Norton Award for Young Adult Science Fiction and Fantasy) is an annual award presented by the Science Fiction and Fantasy Writers Association (SFWA) to the author of the best young adult or middle grade science fiction or fantasy book published in the United States in the preceding year.

It is named to honor prolific science fiction and fantasy author Andre Norton (1912–2005), and it was established by then SFWA president Catherine Asaro and the SFWA Young Adult Fiction committee and announced on February 20, 2005.

Soon after, members are given a month to vote on the ballot, and the final results are presented at the Nebula Awards ceremony in May.

Holly Black and Scott Westerfeld have had the most nominations at four—with Black winning once and Westerfeld yet to win—followed by Sarah Beth Durst, Jenn Reese, and Greg van Eekhout with three nominations each without winning.

Black, Alaya Dawn Johnson, Delia Sherman, and Ysabeau S. Wilce are the only authors besides Wilde nominated multiple times to have won the award, with one win apiece out of four, two, two, and two nominations, respectively.