Terry Pratchett

The Diskworld Series

The Colour of Magic

The Light Fantastic

Equal Rites

Mort

Sourcery

Pyramids

Wyrd Sisters

Guards! Guards!

Eric

Moving Pictures

Reaper Man

Witches Abroad

Small Gods

Lords and Ladies

Men at Arms

Soul Music

Interesting Times

Maskerade

Feet of Clay

Hogfather

Jingo

The Last Continent

Carpe Jugulum

The Fifth Elephant

The Truth

Discworld Spinoffs

Several graphic novels

Most of the books on Audio

Several screenplays/plays

Note: Most of these are written with, or adapted by, Stephen Briggs (*) or Paul Kidby (~)

The Discworld Companion *

The Streets of Ankh-Morpork *

The Discworld Mapp *

A Tourists Guide to Lancre *~

Death's Domain ~

Nanny Ogg's Cookbook *~

Science of the Diskworld

The Nomes

Diggers

Wings

Truckers

The Carpet People