Hours (stylised as 'hours...' ) is the 22nd studio album by the English musician David Bowie. It was originally released on 21 September 1999 through the Internet on the artist's website BowieNet, followed by a physical CD release on 4 October through Virgin Records. It was one of the first albums by a major artist available to download over the Internet. Originating as a soundtrack to the video game Omikron: The Nomad Soul (1999), Hours was the final collaboration between Bowie and guitarist Reeves Gabrels, with whom he had worked since 1988. The album was recorded in mid-1999 between studios in Bermuda and New York City. A song contest conducted on BowieNet in late 1998 resulted in a fan contributing lyrics and backing vocals to one of the tracks.

In contrast to the experimental nature of Bowie's other works throughout the decade, Hours presents a pop rock and art pop style reminiscent of Hunky Dory (1971), further evoking styles and ideals previously explored on Bowie's past works. The lyrics are introspective, detailing topics such as the collapse of relationships and subjects of angst. Also present are overtly Christian themes, which is reflected in the cover artwork. Inspired by the Pietà, it depicts the short-haired Bowie persona from the Earthling era, resting in the arms of a long-haired, more youthful version of Bowie. The title, originally The Dreamers, is a play on "ours".

Accompanied by multiple UK top 40 singles, Hours peaked at number five on the UK Albums Chart but was Bowie's first album to miss the US Billboard 200 top 40 since 1972. It also received mixed reviews from music critics, many of whom praised individual tracks but criticised the album as a whole, sentiments echoed by later reviewers. Bowie promoted the album through the Hours Tour and various television appearances. Retrospective lists ranking all of Bowie's studio albums have placed Hours among Bowie's weaker efforts. The album was reissued with bonus tracks in 2004 and remastered in 2021 for inclusion on the box set Brilliant Adventure (1992–2001).