Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Innocent

Innocent as a cloistered nun.
—Anonymous

Innocent as a dove.
—Anonymous

Innocent as a lamb.
—Anonymous

Innocent as flowers.
—Anonymous

Innocent as angels.
—Honoré de Balzac

Innocent as a new-born babe.
—Honoré de Balzac

Innocent as 2 merino lambs.
—Josh Billings

Innocent as an infant.
—R. D. Blackmore

Innocent as a babe.
—Robert Browning

As innocent as a new-laid egg.
—Sir William Schwenk Gilbert

Innocent as a child.
—Oliver Goldsmith

Innocent as the wayside fly.
—Cyril Harcourt

Innocent as sleep.
—Aaron Hill

Innocent as an almanac.
—James Huneker

Innocent
As youth before its charm is spent.
—George Edgar Montgomery

As innocent as a devil of two years old.
—English Proverb

Innocent as grace itself.
—William Shakespeare

Innocent as milk.
—Edmund Spenser

Innocent as the age of gold.
—Robert Louis Stevenson

Innocent as a child unborn.
—Samuel Wesley