Gravity Falls is an American mystery comedy animated television series created by Alex Hirsch for Disney Channel and Disney XD. The series follows the adventures of Dipper Pines (Jason Ritter) and his twin sister Mabel (Kristen Schaal), who are sent to spend the summer with their great-uncle (or "Grunkle") Stan (Hirsch) in Gravity Falls, Oregon, a mysterious town full of paranormal incidents and supernatural creatures. The kids help Stan run the "Mystery Shack", the tourist trap that he owns, while also investigating the local mysteries.

The series premiered on June 15, 2012, and ran until February 15, 2016. On November 20, 2015, Hirsch announced that the series would conclude with its second season, stating that this was "100% [his] choice" and that "the show isn't being cancelled – it's being finished" and was reaching its intended conclusion. The series ended on February 15, 2016, with a one-hour finale, "Weirdmageddon 3: Take Back the Falls". Hirsch later stated that he remains open to continuing the series with additional episodes or specials, with the story continued in written form with the 2016 replica of Journal 3, the 2018 graphic novel Gravity Falls: Lost Legends and the 2024 adult audience–focused novel The Book of Bill.

Gravity Falls received critical acclaim for its writing, characters, voice acting, animation, and humor. Additionally, the series won two Emmy Awards, three Annie Awards, and a BAFTA Children's Award, among various other wins and nominations. Gravity Falls garnered high viewership amongst kids, teenagers, and young adults during its run and was Disney XD's highest rated show in 2015 and early 2016, while also setting several ratings records for the network. The series attracts a broad and passionate fandom, is considered to be an influence for many animated shows that followed it, and spawns a variety of official merchandise.