The Eolian Harp is a poem written by Samuel Taylor Coleridge in 1795 and published in his 1796 poetry collection. It is one of the early conversation poems and discusses Coleridge's anticipation of a marriage with Sara Fricker along with the pleasure of conjugal love. However, The Eolian Harp is not a love poem and instead focuses on man's relationship with nature. The central images of the poem is an Aeolian harp, an item that represents both order and wildness in nature. Along with the harp is a series of oppositional ideas that are reconciled with each other. The Eolian Harp also contains a discussion on "One Life", Coleridge's idea that humanity and nature are united along with his desire to try to find the divine within nature. The poem was well received for both its discussion of nature and its aesthetic qualities.

Coleridge began writing The Eolian Harp on 20 August 1795 during his engagement to Sara Fricker. Like his previous poem Lines Written at Shurton Bars, the poem discusses both his engagement and his future marriage. Coleridge was inspired to write the poem after a visit to a house in Clevedon that would serve as his and Fricker's home after their marriage. As Coleridge worked on the poem, he and Fricker were married and they moved to the Clevedon home. During this time, Coleridge held an idealised view of his life with Fricker, and these thoughts work their way into the poem. The poem was published in the 1796 edition of Coleridge's poems and in all subsequent collections. Of his poems for the 1796 collection, Coleridge felt that The Eolian Harp was his favourite.

After the poem's original creation, it was expanded from its original use of an Aeolian harp as its theme over the months that followed. However, Coleridge did not stop working on it when it was first published. Instead, the poem was expanded and rewritten throughout Coleridge's life until 1817. Of the final version, lines 21–25 were previously removed between the 1797 and 1815 editions of Coleridge's poems. Likewise, lines 26–33 were altered through the multiple editions. Regardless of the amount of editing, Coleridge believed that the poem served as a model for other poems, especially those in the series called Conversation poems. Of The Eolian Harp as a model for poetry, Coleridge wrote, "Let me be excused, if it should seem to others too mere a trifle to justify my noticing it—but I have some claim to the thanks of no small number of the readers of poetry in having first introduced this species of short blank verse poems—of which Southey, Lamb, Wordsworth, and others have since produced so many exquisite specimens."

The poem begins by addressing Fricker and discussing the house at Clevedon:

My pensive Sara! thy soft cheek reclined
Thus on mine arm, most soothing sweet it is
To sit beside our Cot, our Cot o'ergrown
With white-flower'd Jasmin, and the broad-leav'd Myrtle,
(Meet emblems they of Innocence and Love!)
And watch the clouds, that late were rich with light,
Slow saddening round, and mark the star of eve
Serenely brilliant (such should Wisdom be)
Shine opposite! How exquisite the scents
Snatch'd from yon bean-field! and the world so hushed!
The stilly murmur of the distant Sea
Tells us of silence.

— lines 1–12

As the poem continues, objects are described as if they were women being pursued:

                           And that simplest Lute,
Placed length-ways in the clasping casement, hark!
How by the desultory breeze caress'd,
Like some coy maid half yielding to her lover,
It pours such sweet upbraiding, as must needs
Tempt to repeat the wrong!