[7] On 19 July, Red Bull Salzburg announced the signing of Oumar Solet on a five-year contract from Olympique Lyonnais.

[8] On 27 July, Kim Jung-min left Red Bull Salzburg to join Vitória de Guimarães.

[17] On 31 August, Smail Prevljak left Red Bull Salzburg to sign permanently for KAS Eupen.

[27] The Following day, 18 December, Zlatko Junuzović extended his contract with Red Bull Salzburg until 30 June 2022.

[29] On 4 January, Red Bull Salzburg announced the signings of Mamady Diambou, Dorgeles Nene and Daouda Guindo from Guidars FC, all on contracts until May 2025.

[32] On 18 January, Hungarian winger Csaba Bukta joined Rheindorf Altach on loan for the remainder of the season.

[34] On 20 January, Red Bull Salzburg announced the signing of Lucho from AAF Popayán, before sending him out on loan to SV Horn the following day.

[35] On 26 January, Red Bull Salzburg announced the signing of Rocco Zikovic from NK Istra on a contract until May 2023.

[44] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.