Vojníkov is a municipality and village in Písek District in the South Bohemian Region of the Czech Republic. It has about 90 inhabitants.

Vojníkov consists of three municipal parts (in brackets population according to the 2021 census):

Vojníkov is located about 5 kilometres (3 mi) north of Písek and 46 km (29 mi) northwest of České Budějovice. It lies in the Tábor Uplands. The municipality is situated on the right banks of the Otava River, which forms the western municipal border.

The first written mention of Vojníkov and Držov is from 1542. Louka was first mentioned in 1323.

There are no railways or major roads passing through the municipality.

There are no significant monuments in the municipality. In the centre of Vojníkov is a small rural chapel with Empire elements. It dates from 1861.