Abby (disambiguation)

Abby may refer to:
 * Abby, a tracer; companion of the Fifth Doctor.
 * Abby (Oxygen), miner aboard Chasm Forge.
 * Abby (The Zentrabot Invasion), a young girl; briefly, companion of the Eleventh Doctor.
 * Abby McPhail, creator of The Blue Box Files. (AUDIO: SOS et al.)