Trolleybuses in Zlín and Otrokovice (Czech: Trolejbusová doprava ve Zlíně a v Otrokovicích) refers to a network of trolleybuses in the neighbouring Moravian towns of Zlín and Otrokovice and it is operated by the Zlín-Otrokovice Transport Company.

It also makes it the fourth largest by size after Ostrava, Pardubice and České Budějovice.

Since 1899, the local railway was the main burden, but it only passed through the centre of the city and was thus unable to serve the traffic of the new distant districts.

As early as 1928, Pavel Vaculik's private bus service came into being, serving the eastern part of the city and connecting it with Bata's factories.

In 1940, another bus operator, now controlled by Bata, joined the Otrokovice-Zlín-Vizovice Railway (OZVD).