Dolní a Horní Cejl, Historical district in Brno, Czech Republic.

Unter und Ober Zeil is a former suburb of Brno whose original built fabric survives almost unchanged: multi-storey historic houses, mostly from the 19th century, line Francouzská, Bratislavská and Cejl streets. The core lies in the western part of today's Zábrdovice cadastral area, and the district's territory also took in the middle of Černá Pole, northern Trnitá and south-eastern Ponava.

The area began in the early 1300s around Cejl Street and expanded in 1784 with the creation of Upper Cejl next to the original Lower Cejl. This division marked an important phase in the neighborhood's spatial development.

The name Cejl comes from the German Zeil, meaning a row of houses along a line. The core streets Francouzská, Bratislavská and Cejl keep their 19th-century multi-storey frontages, and the district was administratively merged with neighbouring Zábrdovice in the second half of the 1960s.

The neighborhood connects well to central Brno through trams and buses that operate regularly throughout the area. The good accessibility makes it easy to explore the district and reach nearby locations.

Heinrich Hoph opened a textile factory on Cejl Street in 1786, marking the beginning of industrial activity in this part of the city. This early factory drew other commercial activities and shaped the area's economic importance.