Y3 was a series of diesel railcars operated by Statens Järnvägar (SJ) of Sweden. Six units were delivered by Linke-Hofmann of Germany in 1966–67. Tbey remained in service until 1990, serving first on the unelectrified services Stockholm – Mora and Malmö – Karlskrona, later on Ystadbanan.The Y3 served the same purpose as the electric X9-series. A variation of configurations was used, with the production consisting of six motor cars, two cab cars and eleven trailers.