Henry Roby may refer to:

• Henry John Roby (1830–1915), English classical scholar and politician
• Henry Albert Roby (1844–1905), American architect

• Twelve Bens
• Twelve Caesars
• Twelve Chairs
• Twelve Colonies
• Twelve concerti grossi, Op. 6 (Corelli)
• Twelve days of Christmas
• Twelve days of christmas
• Twelve Days Of Christmas
• Twelve Days of Christmas
• Twelve Deadly Cyns...and Then Some
• Twelve-dish Christmas Eve supper
• Twelve dreams of doctor sardonicus
• Twelve Dreams of Dr. Sardonicus
• Twelve dreams of dr. sardonicus
• Twelve dreams of dr sardonicus
• Twelve dreams of Dr Sardonicus
• Twelve Dreams of Dr Sardonicus
• Twelve earthly branches
• Twelve Girls Band
• Twelve Gods of Olympus
• Twelve great feasts
• Twelve Great Feasts
• Twelve Inches
• Twelve-inch single
• Twelve Inch Singles (1981–1984)