David Cerrajería Rubio (born 4 June 1983), commonly known as Cerra, is a Spanish former footballer who played as a defender (either right or left back).

After three seasons with lowly Alicante CF in Segunda División B, Valencia-born Cerra signed for Valencia CF. Although already 22, he would spend the next two years registered with its B-team, playing his first season in Tercera División, with promotion.

As a versatile defensive unit capable of playing as a right or left back, Cerra found action on either side of the pitch in five La Liga matches, his debut coming on 5 November 2006 in a 1–1 away draw against RCD Espanyol.^[1][2] This was due to a storm of injuries that hit the back-four sector hard in the campaign (Emiliano Moretti and Asier del Horno the more serious ones).^[3]

Cerra was loaned to Segunda División's Polideportivo Ejido for 2007–08^[4] and, after the Andalusia team's relegation, left Valencia for another club in the community, Levante UD. He appeared in 15 games in his second year – 11 starts – helping to a return to the top flight after two years.