The 2012–13 División de Honor is the 46th season of the top flight of the Spanish domestic rugby union competition since its inception in 1953.

La Vila was the relegated team to División de Honor B.

The season took place between September and March, with every team playing each other home and away for a total of 22 matches.

The division was increased from 10 teams in the previous season to 12, with Atlético Madrid, Complutense Cisneros and Hernani gaining promotion from Division de Honor B, and only Alcobendas being relegated.

Source: Federación Española de Rugby The relegation playoff was contested over two legs by Hernani, who finished 11th in División de Honor, and neighbours Alcobendas, the losing team from División de Honor B promotion playoff final.