Deák Ferenc tér is a transfer station on the M1, M2, and M3 lines of the Budapest Metro. It is located under Deák Ferenc square in central Budapest, the capital city of Hungary. Owing to its direct transfer connection between three out of the four metro lines Budapest has and its downtown location, it is one of the busiest stations in the system.

Line 1 is the oldest line of the Budapest Metro, it was built from 1894 to 1896. It is known locally as "the small underground", while the M2, M3 and M4 are called "metró". It was the first underground on the European mainland, and the world's third oldest underground after the London Underground and The Glasgow Subway.