MTR Addons are Minecraft Mods that add new content (such as blocks and items) and functionality that integrate with the MTR Mod's core functions. They are installed like any other Minecraft Mod, with the exception being that they require the MTR Mod to be installed alongside it as well.

The Station Decoration Addon is a decorative mod that adds new Signs, PIDS and Catenary objects. This mod is essential for those who seek realism in railway lines that require the use of overhead wires for trains to draw power from.

Nemo's Transit Expansion is an addon that adds experimental features to the MTR mod, such as support of .obj-models and train scripting using JS. There is no version of this mod for MTR 4.0, as most of NTE's features were absorbed into MTR in 4.0.

Joban Client Mod is an addon based on Minecraft Transit Railway Mod, adding various blocks from the Hong Kong MTR and utility blocks that will greatly improve your world. Some of the blocks this mod adds including Static Signal Light, Fare Saver machine, Railway Vision PIDS and other decoration blocks to help you build your very own railway system!

The Tube addon is a addon that provides blocks and items made for London Underground-style tube stations. It includes things like tunnel blocks, curved station walls, LU-styled Platform Information Displays and tunnel signals! The mod also features a few blocks that provide ambient sounds to truly bring your station to life!

The Russian Metro Addon is an addon that adds features from the Russian Metro system, such as ticket barriers and machines.