Whatsit may refer to: Whatsit, a placeholder word Waterman Whatsit, an aeroplane designed by Waldo Waterman Mrs. Whatsit, a character in A Wrinkle in Time by Madeleine L'Engle Wotsits, cheese puffs produced by Walkers, a British snack food manufacturer The WHATSIT database program Martin M-1 Whatsit, glider