Lyden is an unincorporated community and census-designated place in Rio Arriba County, New Mexico, United States. As of the 2020 census, Lyden had a population of 250. The community is located on the west bank of the Rio Grande. It was formerly known as "El Bosque." A post office operated in Lyden between 1902 and 1957.
According to the U.S. Census Bureau, the community has an area of , all land.
It is in Española Public Schools. The comprehensive public high school is Española Valley High School.