The Nederlandse Spoorwegen (NS) Class 1000 was a set of ten electric locomotives (numbered 1001-1010) used in the Netherlands during the latter half of the 20th century.

The electrical systems and three completed units were ordered from the Swiss Locomotive and Machine Works in 1942, but the war blocked delivery until 1948.

NS management already had contact with the Swiss company Oerlikon about ordering a series of electric locos before the war.

The "Schweizerische Lokomotivenfabrik Winterthur" (SLM) would build 3 complete locos and deliver the electrical equipment for the remaining 7.

This configuration was already used successfully on the electrified railway network on Java, then a Dutch colony, but in the Netherlands it was a failure due to its complicated technology and high maintenance.