McLaren has revealed the MCL35M will be launched in a presentation on Monday, February 15.
McLaren has become the second team to announce a date for the unveiling of its 2021 car after Alfa Romeo confirmed a February 22 launch date last week.
The launch will be broadcast live at 19:00 GMT on Sky Sports F1 in the UK, with the presentation taking place at the McLaren Technology Centre.
Last year McLaren finished third in the constructors' championship, fending off the challenge of both Racing Point and Renault in a three-way duel that was only decided at the final race of the year.
For 2021, McLaren will run Mercedes power units. The team is the only outfit on the grid to change power unit supplier from last year to this. In reference to its new partner, McLaren has labelled this year's car the 'M'.
During the ceremony, Daniel Ricciardo will be officially introduced as a McLaren driver. The Australian moved from rivals Renault in the winter, replacing Carlos Sainz who will race this year with Ferrari.
Lando Norris remains at the team for a third year.