Sigma

From TARDIS Index File, the free Doctor Who reference.

Transferring the TARDIS base code numerals, Master. This is a disambiguation page. It points to other pages that have similar names. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.

Sigma may refer to:

• Σ, an Ood (DW: Planet of the Ood)
• Sigma (planet), the home of Dr. Ivan Asimoff (DWM: "The Fabulous Idiot")
• Theta Sigma, an alias of the Doctor (DW: The Armageddon Factor, The Happiness Patrol, DWM: "Flashback")