Giving your forum an entirely new look and feel is easy — just download one of these great themes! There are even themes for the admin control panel.
Browsing All Themes

Free Responsive MyBB Theme - NetPen
Material new admin panel theme

io Theme is a minimal, simple and free MyBB theme.

A MyBB GitHub like theme

Cool little theme by Lunorian

It's simple and clean MyBB Theme, feel free to use it.
Classic material theme

A simple variant of the default MyBB theme.

If you want to shut down our site for maintenance, this theme is for you!

Elusive is a clean and elegant Flat MyBB theme which can be used by all sort of community users. Elusive is a mobile-friendly, fully responsive theme for MyBB 1.8.11, optimised for performance.

A very simple black and grey efficient theme and template. Easy on the eyes, useful member block controls. A great theme if you want users to spend lots of time on the forum.
Responsive theme for your board!
Vbulletin Like mybb theme for version 1.8.x

A beautiful, clean and elegant gaming theme.

A basic upgraded version of the stock theme.
Which also already for IPB / Xenforo exist .. now however also for Mybb

Make your acp material styled!