There are / have been horse tramways in the following places in Belgium:
Tielt is a small city with (today) about 20.000 inhabitants. It is situated in the province of West-Vlaanderen, about 20 km west of the city of Gent.
There were no particular horse tram lines in the city. But as the connection from the railway station to the Market in Tielt was not suitable to be run with steam traction (a length of only 1,2 km), a separate service with horse trams was started over the lines of the NMVB. It can be seen as a prolongation of the steam tram line from Aalter to Tielt. By means of the horse tram, it could be avoided to let the steam trams in the center of the city of Tielt.
The line was opened on 1999-07-17. It was stopped on 1914-09-13 with the outbreak of World War II. It was operated by the RELSE, the company that also operated other lines of the NMVB around Tielt.
There seem to have been two horse tram coaches special for the small line in Tielt.