The Society for the Preservation of the Irish Language (SPIL; Irish: Cumann Buan-Choimeádta na Gaeilge) was a cultural organisation in late 19th-century Ireland, which was part of the Gaelic revival of the period.
It was founded on 29 December 1876. Present at the meeting were Charles Dawson, High Sheriff of Limerick, T. D. Sullivan, editor of The Nation; and Bryan O'Looney. Writing in 1937, Douglas Hyde also remembers himself, George Sigerson, Thomas O'Neill Russell, J. J. McSweeney of the Royal Irish Academy, and future MP James O'Connor as being present. Its patron was John MacHale, Archbishop of Tuam, its first president was Lord Francis Conyngham, and its first vice-presidents included Isaac Butt and The O'Conor Don.