John Kells Ingram (7 July 1823 – 1 May 1907) was an Irish economist and poet who started his career as a mathematician.

He has been co-credited, along with John William Stubbs, with introducing the geometric concept of inversion in a circle

Literary works

Ingram published several books of poetry and fiction:

• 1840 – Sonnets, Dublin University Magazine
• 1843 – The Memory of the Dead
• 1845 – The pirate’s revenge, or, A tale of Don Pedro and Miss Lois Maynard, Wright’s Steam Power Press, Boston 1845
• 1846 – Amelia Somers, the orphan, or, The buried alive], Wright’s Steam Power Press, Boston 1846
• 1897 – Love and Sorrow, priv., Dublin - 1897
• 1900 – Sonnets and Other Poems, Adam & Charles Black, London 1900