The Sotetsu 13000 series () is an electric multiple unit (EMU) train type operated by the private railway operator Sagami Railway (Sotetsu) on commuter services in Kanagawa Prefecture, Japan, since 2026.
The 13000 series is built on J-TREC's Sustina platform. The trains inherit the underfloor equipment and interior design used with the earlier 12000 series, but the 13000 series' end cars each feature six additional seats.
The train type will be used across the Sotetsu network. Instead of being formed of 10 cars like the 8000 and 9000 series trainsets the new trains are due to replace, Sotetsu decided that initial 13000 series sets would use an 8-car formation, citing population trends along the railway. However, Sotetsu expressed that it was willing to reconsider its plans if needed.
The new train type was first teased by Sotetsu on 7 February 2025. Sotetsu announced additional details for the 13000 series on 25 April 2025.
The first set was delivered from the J-TREC plant in Yokohama in November 2025. The fleet entered revenue service on 30 March 2026.