David Seco Amundarain (born March 17, 1973) is a Spanish professional racing cyclist. Although he is known as a cyclo cross racer he also race road. He was part of Ripolin Bondex team in the 90s. He was on the same team as Óscar Freire and Iñaki Barrenetxea, both professionals later on.

Seco retired in 2011 with over 100 victories.