Tart Magica Witches
While a number of witches appear in Puella Magi Tart Magica, the vast majority of them remain unnamed with the exception of the witch form of Isabeau. Even Lapin's witch form remains unnamed. Below are images of the various witches that appear throughout the series in order of appearance.
Unnamed Witch 1
This is the witch form of Lame, a magical girl under the control of Isabeau and her daughters.
Unnamed Witch 2
Unnamed Witch 3
Unnamed Witch 4
Unnamed Witch 5
Unnamed Witch 6
Unnamed Witch 7
This is the witch form of Fleche, a magical girl under the control of Isabeau and her daughters.
Unnamed Witch 8
The witch form of Lapin. Her special ability allows her to transform back into a magical girl at her death.
Various Unnamed Witches
During the final battle against Minou and Lapin, Minou transported an army of unnamed magical girls to the battlefield. Once there, she causes them all to immediately transform into witches which she used as an army against Tart, Riz, Melissa and Elisa.