The festival runs from August 18-21 at Curzon Soho, Curzon Bloomsbury, Picturehouse Central in the West End and the Ritzy in Brixton.
The producer is the exclusive wine supplier to the festival with a focus on its Esquinas de Argento Malbec.
Ticket holders who buy a glass will be eligible for a second one free at designated Picturehouse cinemas during the course of the festival.
There will also be 10% off and complementary glasses of wine for ticket holders at partner restaurant La Patagonia.
Argento wines will be served at a reception at the Argentine ambassador’s residence as a curtain raiser to the festival.
Gustavo Crespo, the UK managing director of Blends Wine Estates, a family of wineries which includes Bodega Argento, says: “It gives us great pleasure to continue as the main sponsor of London’s Argentine Film Festival.
“The partnership provides us with an excellent opportunity to present Bodega Argento wines to a wonderful audience of culture-seeking Londoners.
“It also supports Bodega Argento’s objective of bringing the real Argentine lifestyle to the UK.”