Home Improvement is an American sitcom television series starring Tim Allen originally airing on ABC from September 17, 1991, to May 25, 1999, with a total of 204 half-hour episodes spanning eight seasons. The series was created by Carmen Finestra, David McFadzean, and Matt Williams, and was one of the most watched sitcoms in the United States during the 1990s, winning many awards and being ABC's number-one sitcom for most of its run. The series also launched stand-up comedian Allen's acting career, and grossed more than $500 million in syndication revenue by 1996.

Based on the stand-up comedy of Tim Allen, Home Improvement made its debut on ABC on September 17, 1991, and was one of the highest-rated sitcoms for almost the entire decade. It went to No. 2 in the ratings during the 1993–1994 season, the same year Allen had the No. 1 book (Don't Stand Too Close to a Naked Man) and film (The Santa Clause).

Beginning in season 2, Home Improvement began each episode with a cold open, which features the show's logo during the teaser. From season 4 until the end of the series in 1999, an anthropomorphic version of the logo was used in different types of animation.

The series centers on the Taylor family, which consists of Tim (Tim Allen), his wife Jill (Patricia Richardson) and their three sons: Brad (Zachery Ty Bryan), Randy (Jonathan Taylor Thomas), and Mark (Taran Noah Smith). The Taylors live in suburban Detroit, and they have a neighbor named Wilson (Earl Hindman).

Each episode includes Tim's own Binford-sponsored home improvement show, called Tool Time, a show-within-a-show. In hosting this show, Tim is joined by his friend and mild-mannered co-host Al Borland (Richard Karn), and a "Tool Time girl"—first Lisa (Pamela Anderson) and later Heidi (Debbe Dunning)—whose main duty is to introduce the pair at the beginning of the show with the line "Does everybody know what time it is?" In reply, the audience yells, "TOOL TIME!" The Tool Time girl also assists Tim and Al during the show by bringing them tools.

Tool Time was conceived as a parody of the PBS home-improvement show This Old House. Tim and Al are caricatures of the two principal cast members of This Old House, host Bob Vila and master carpenter Norm Abram. Al has a beard and always wears plaid flannel shirts when taping an episode, reflecting Norm Abram's appearance on This Old House. Bob Vila appeared as a guest star on several episodes of Home Improvement, while Tim Allen and Pamela Anderson both appeared on Bob Vila's show Home Again.

The series ended after eight seasons in 1999. Richardson was offered $25 million to do a ninth season; Allen was offered $50 million. The two declined the offer and the series came to an end as a result.

Throughout the show, Tim Taylor would often wear sweatshirts or T-shirts from various Michigan-based colleges and universities. These were usually sent by the schools to the show for him to wear during an episode. Because Allen considered Michigan his home state, the rule was that only Michigan schools would get the free advertising. There were two notable exceptions. During the episode "Workshop 'Til You Drop" Tim wears a Wofford College (South Carolina) sweatshirt. And in "The Wood, the Bad and the Hungry" he is seen wearing an Owens Community College (Ohio) sweatshirt.