Dennis Mullins could refer to:

• Spike Mullins (1915–1994), full name Dennis Jeremiah Mullins, British comedian
• Pat Mullins (1937–2017), full name Dennis Patrick Mullins, American businessman and chairman of the Republican Party of Virginia.

• Innertavle
• Inner Terai
• Inner Terai Valleys of Nepal
• Inner Traditions - Bear and Company
• Inner Traditions Bear and Company
• Inner Traditions - Bear & Company
• Inner transition
• Innertubing
• Inner tubing (disambiguation)
• Innervation of the viscera
• Innervation of viscera
• Inner Views
• InnerVIEWS with Ernie Manouse
• Inner-Vikna
• Inner Vision
• Inner Voices
• Inner wall
• Inner Wastelands
• Innerwear
• Inner wear
• Innerwear as outerwear
• Inner Western Malayo-Polynesian languages
• Inner West railway line, Sydney
• Inner West Sydney
• Innerwick Castle