1. WR - Noun
2. WR - Proper noun
(sports, speedrunning) Initialism of world record.
Coordinate terms: WB, OR, CR, TR, NR, GR
(American football, Canadian football) Initialism of wide receiver.
Coordinate terms: QB, FB, HB, LB
(astronomy) Initialism of Wolf-Rayet star.
Coordinate terms: WD, RD, PSR
Initialism of Wassermann reaction.
(rugby union) Initialism of World Rugby, the international governing body for rugby union.
(Britain) Initialism of William Rex. The royal cypher for William IV, king of Great Britain
Source: en.wiktionary.org