The 1928–29 Yorkshire Cup was the 21st occasion on which the Yorkshire Cup competition had been held. Leeds won the trophy by beating Featherstone Rovers in the final by the score of 5-0. The match was played at Belle Vue, in the City of Wakefield, now in West Yorkshire. The attendance was 14,000 and receipts were £838. This was Leeds' first of six victories in a period of ten years, during which time they won every Yorkshire Cup final in which they appeared.

The Rugby Football League's Yorkshire Cup competition was a knock-out competition between (mainly professional) rugby league clubs from the county of Yorkshire. The actual area was at times increased to encompass other teams from outside the county such as Newcastle, Mansfield, Coventry, and even London (in the form of Acton & Willesden. The Rugby League season always (until the onset of "Summer Rugby" in 1996) ran from around August-time through to around May-time and this competition always took place early in the season, in the Autumn, with the final taking place in (or just before) December (The only exception to this was when disruption of the fixture list was caused during, and immediately after, the two World Wars).

This season there were no junior/amateur clubs taking part, no new entrants and no "leavers" and so the total of entries remained the same at fifteen. This in turn resulted in three byes in the first round.^[1]

1 * The attendance is given as 13,000 by RUGBYLEAGUEproject^[1] but 14,000 by the Rothmans Rugby League Yearbook of 1991-92^[3] and 1990-91^[4]

2 * Belle Vue is the home ground of Wakefield Trinity with a capacity of approximately 12,500. The record attendance was 37,906 on the 21 March 1936 in the Challenge Cup semi-final between Leeds and Huddersfield

• 1928–29 Northern Rugby Football League season
• Rugby league county cups