Kačice is a municipality and village in Kladno District in the Central Bohemian Region of the Czech Republic.

The surname was derived from the feminine name Káča, Kačena (variation of the name Kateřina, Czech form of Catherine) or from of the Old Czech word kačice ('duck').

The Loděnice River flows along the southwestern municipal border.

In 1550–1551, both parts of Kačice were bought by the Martinic family and annexed to the Smečno estate.

[3] The D6 motorway from Prague to Karlovy Vary runs south of the village, just outside the municipal territory.