Slichtenhorst is a hamlet in the Dutch province of Gelderland.

It is a part of the municipality of Nijkerk, and lies about 8 km east of Amersfoort.

[2] It was first mentioned in 1434 as Slichterhorst, and means "flat height with growth".

[4] The land around Slichtenhorst used to be owned by the Abdinckhof monastery in Paderborn.

In 1803, during the French occupation, the land was confiscated by the State and sold to Dutch farmers.