The 1999 No Mercy held in the United Kingdom was the inaugural No Mercy professional wrestling pay-per-view (PPV) event produced by the American promotion, World Wrestling Federation (WWF, now WWE). It took place on May 16, 1999, at the Manchester Evening News Arena in Manchester, England and was broadcast exclusively for the United Kingdom. It was the only No Mercy held in the United Kingdom, as beginning with the October 1999 event, all further No Mercy events were held in the United States.

During this time, the pay-per-view market was relatively new to the UK, as before 1997, all pay-per-view events were broadcast for free on Sky Sports. UK-exclusive pay-per-views were established as a means to promote this new delivery method, however, the events were booked and treated similarly to house shows.

It was released on DVD in the UK and Europe on 12 July 2010, in a set also including Capital Carnage as part of the WWE's Tagged Classics range released by Silver Vision, without any edits to the original content, most notably keeping all mentions and appearances of the WWF logo intact and un-blurred.