The A63 is a major road in Yorkshire, England between Leeds and Kingston upon Hull. A section between South Cave and Hull forms the eastward continuation of the M62 motorway and is part of the unsigned Euroroute E20.

The route from Leeds out to Selby runs roughly parallel, and (1 to 3 km) south of the route of the Leeds and Selby Railway.

The route begins just east of Leeds city centre at a junction with the A61, although, prior to its February 2009 realignment along the new East Leeds Link Road, it began at a junction with the A64 in the Halton Moor area of the city (now signed as the B6159). Heading out of Leeds the route, despite being of dual carriageway standard, is subject to a 40 mph speed limit, and incorporates peak-time HOV lanes. At the end of this dual carriageway section, the route meets the M1, and the road continues north along the motorway for one junction then resumes as the A63.

From junction 46 of the M1, the Thorpe Park roundabout, the route continues east, meeting the A642 at Garforth. There is a turning for Lidgett Lane (B6137) to the left, next to Garforth Community College, with the TOTAL Garforth West garage on the right. It crosses the Leeds Country Way (a former railway), and there is the B6137 to the right for Kippax. On the Garforth/Micklefield parish boundary is a roundabout with the A656 Roman Ridge.

Clive A. Sullivan MBE (born 9 April 1943 in Cardiff, died 8 October 1985 in Hull) was a Welsh rugby union and professional Rugby League World Cup winning footballer of the 1960s, 70s and 80s. A Great Britain and Wales international winger, he played with both Hull and Hull Kingston Rovers in his career, and also played for Oldham, and Doncaster. He was the first black captain of the Great Britain Lions and for any national British sporting side.

Whilst growing up in the Splott district of Cardiff as a young teenager, he required operations on his knees, feet and shoulders. Due to the extent of these operations, a rugby career seemed unlikely. Sullivan never gave up, however, and he overcame his early childhood trauma by being granted a trial by Bradford Northern Rugby League Club at the age of just 17. Bradford however, passed on the young winger.

Rugby league club Hull, had different ideas about Sullivan and gave the young man, who boasted phenomenal speed, a chance to play rugby league. In his debut for Hull, Sullivan had an outstanding game and gained the support of the Hull club and city. Sullivan became known for his exceptional speed and the way he would outplay rugby league's finest opposition wingers. His upper-body was deceptively strong which gave him excellent cover defence. Despite his knees which haunted his childhood requiring constant attention and further operations, he played a total of 352 games for Hull, scoring 250 tries. In his 213 games for Hull K.R. he scored 118 tries.