I Know What You Did Last Summer (disambiguation)

I Know What You Did Last Summer is a 1997 American slasher film based on the 1973 novel.

I Know What You Did Last Summer may also refer to:

• I Know What You Did Last Summer (novel), a 1973 suspense novel for young adults by Lois Duncan
• "I Know What You Did Last Summer" (Supernatural), an episode of the TV series Supernatural
• "I Know What You Did Last Summer" (The Vampire Diaries), an episode of the TV series The Vampire Diaries
• "I Know What You Did Last Summer" (Scream), an episode of the TV series Scream
• "I Know What You Did Last Summer (song)", a 2015 song by Shawn Mendes and Camila Cabello
• "I Know What You Did Last Summer", a 2015 song by Jacob Whitesides featuring Kelly Rowland

See also

• I Know What You Did Last Summer (film series)
• I Still Know What You Did Last Summer, a 1998 slasher film and a sequel to the 1997 film
• I'll Always Know What You Did Last Summer, a 2006 horror film released straight to DVD and the third installment in the series
• I Know What You'll Do Next Summer, a third season episode of the mystery series Veronica Mars