Pennsylvania Route 284 (PA 284) is an 9.04-mile (14.55 km) long state highway located in Lycoming County in Pennsylvania. The western terminus is at PA 287 in English Center. The eastern terminus is at US 15 in the Buttonwood section of McNett Township. The route is rather isolated, passing through forestry most of its length. PA 284 was designated as a spur of Pennsylvania Route 84 in the 1928 renumbering of state highways in Pennsylvania. The route was paved in 1932 and has remained relatively untouched since, although Route 84 was re-designated as PA 287 in 1961 to avoid duplication with Interstate 84.

PA 284 begins at an intersection with Route 287 just north of the community of English Center, Pennsylvania. PA 284 progresses to the northeast, crossing as a one-lane highway through the desolate portions of Lycoming County. For the first few miles, the route passes through deep trees and some nearby residences before turning northward at a clearing in English Center. The route continues northward, paralleling the Little Pine Creek around the bases of large hills, some of which reach 1,600 feet (490 m) high.

After passing Stahineckers Pond, PA 284 crosses Texas Creek and soon over the Little Pine Creek, paralleling Flicks Run until the intersection with Flooks Run Road, where it continues northward along Blockhouse Creek. Most of the surroundings along PA 284 are rather desolate, populated by forestry. At the intersection with Schmouder Drive, there are some residences, but the one-lane highway continues eastward into the community of Buttonwood. After the intersection with Homer Hollow Road, PA 284 becomes two-lanes as it enters the interchange with U.S. Route 15 southbound. Heading through the trumpet, PA 284 curves to the northwest through Buttonwood, interchanging with U.S. Route 15 northbound, where the designation terminates.

PA 284 was first designated along its current alignment during the 1928 renumbering of state highways in Pennsylvania. The designation was done as a spur to the alignment of PA 84, which was designated from Piatt Township to the New York state line. The entire alignment of PA 284 was paved by the Pennsylvania Department of Highways in 1932, including the bridge over Flooks Run and Blacks Creek. However, the alignment has remained relatively unchanged since. In 1961, with the designation of Interstate 84, the alignment of PA 84 was re-designated as PA 287 to avoid duplication. In 1974, PA 284 was adjusted for the construction of the new U.S. Route 15 alignment. This was adjusted in 1998 with the construction of U.S. Route 15 for preparations to convert the route to Interstate 99. In 1998 and 2002 respectively, both the Blacks Creek and Flooks Run bridges were reconstructed, and during the ensuing ten years after, several bridges were also replaced.

The entire route is in Lycoming County.