This is a list of Spanish football transfers for the winter sale in the 2019–20 season of La Liga.
Players without a club can join one at any time, either during or in between transfer windows.
Clubs below La Liga level can also sign players on loan at any time.
If need be, clubs can sign a goalkeeper on an emergency loan, if all others are unavailable.
Note: Clubs highlighted in bold form part of the 2019–20 La Liga.