Unforgiven: In Your House was the 21st In Your House and inaugural Unforgiven professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF; WWE as of 2002). It took place on April 26, 1998, at the Greensboro Coliseum Complex in Greensboro, North Carolina. This was the first WWF pay-per-view that used the new "scratch" logo for promotional work, which had first appeared on the ring apron at WrestleMania XIV. This event saw the first Inferno match and WWF's first evening gown match.

This was one of the In Your House events which later became the title of an annual pay-per-view, replacing the method at the time of making new names for all events aside from the "Big Five" (Royal Rumble, WrestleMania, King of the Ring, SummerSlam, and Survivor Series). Unforgiven returned in September 1999, becoming the promotion's annual September PPV until its final event in 2008.