Spinal Tap may refer to:

• Lumbar puncture, a medical procedure colloquially referred to as a "spinal tap"
• Spinal Tap (band), a parody fictional heavy metal band
• This Is Spinal Tap, 1984 mockumentary about the same band

• Glóin, son of Thorin
• Glória de Dourados
• Glóssa
• Glóssa, Sporades
• Glóssa (Sporades), Greece
• Glósóli
• Glôb Byw
• Glödnitz
• Glös
• Glött
• Gløshaugen
• Glúm Geirason
• Glúmr Geirason
• Glúmur Geirason
• Glück
• Glück das mir verblieb
• Glücksburg (Ostsee)
• Glückshaus
• Glü Gun
• Glüsing
• Glüsing (Dithmarschen)
• Glădăria River
• GM1
• GM 1
• GM10