Xilli ciyaareedkii 2020-21 wuxuu ahaa xilli ciyaareedkii 111aad ee jiritaanka Real Sociedad iyo xilli ciyaareedkii 11aad ee isku xigta ee kooxda ee horyaalka ugu sareeya kubada cagta Spain. Horyaalka gudaha ka sokow
, Real Sociedad waxay kaqeyb qaadatay xilli ciyaareedkan daabacaadaha Copa del Rey, Supercopa de España, waxayna sidoo kale kaqeyb qaadatay UEFA Europa League. Xilli ciyaareedku wuxuu daboolay muddadii u dhaxaysay 20 Luulyo 2020 ilaa 30 Juun 2021, iyadoo bilowga xilli ciyaareedku uu soo daahay sababo la xiriira cudurka faafa ee COVID-19 ee Spain.