Homolka, Nature reserve in Praha-Velká Chuchle, Czech Republic.

Homolka is a nature reserve in Praha-Velka Chuchle covering about 13 hectares and serving as a protected habitat for local species. The site overlaps with Chuchelske hajen and contains several walking paths for observing the natural environment.

Homolka was declared a nature reserve on 1 July 1982 by decree of the National Committee of the Capital City of Prague. Limestone quarrying, never large in scale, ended in the early 20th century, while controlled grazing of small livestock continued until the 1950s. The geological value of the site was recognised during quarrying.

The yellow hiking trail from Chuchelský háj crosses the reserve, and the last three stops of the Barrandovské skály–Chuchelský háj nature trail focus on Homolka's geology. Shale mined here was used in mosaic paving on Prague sidewalks, and limestone was burned for lime at Pacoldova vápenka, now a technical monument.

The site is managed by Prague City Hall and offers clearly marked walking paths for visitors to explore. Wear appropriate footwear and be cautious during wet weather, as trails can become muddy.

The reserve protects a globally defined stratotype: the lower boundary of the Lochkov and Pragian stages of the Lower Devonian, marked by the first appearance of the conodont Eognathodus sulcatus. Trilobite Leonaspis lochkovensis was found in the Lochkov Formation.