Wansapanataym (Filipinization of the English phrase "once upon a time"), also known as Wansapanataym Presents, is a Philippine fantasy anthology television series produced and broadcast by ABS-CBN, airing every Sunday night. The series follows the stories of everyday people as they encounter fantastic events involving magic and the supernatural and how their lives are forever changed by their adventures with the otherworldly. Like the children's television series Hiraya Manawari, the series also focuses on providing values education for children and young adults through cooperation, courage, discipline, honesty, humility, love, obedience and respect, adapted from Filipino stories and legends or original stories.

The series was aired from June 22, 1997, to February 27, 2005, replacing The Sharon Cuneta Show, then re-aired from 2006 to 2007 and from September 11, 2010, to April 7, 2019, replacing Agimat: Ang Mga Alamat ni Ramon Revilla and was replaced by Hiwaga ng Kambat. The series was also aired on ABS-CBN's Yes Weekend! primetime block with new episodes and remakes of past episodes. However, because of the COVID-19 pandemic in the Philippines, Wansapanataym returned on air every weekend until some time in 2020, temporarily replacing 24/7 and Home Sweetie Home until the broadcast franchise of ABS-CBN expired.

Wansapanataym is the longest-running fantasy anthology series on Philippine television, reaching its 19th year in 2019. The series was officially described as "The Original Storybook of Filipino Children".Over the course of the episodes, most episodes have spanned a variety of genres and subgenres including romantic comedy, action-adventure, horror, and science fiction, while also keeping the fantasy genre.