thumb|300px|right|Looking towards Chaine Memorial Tower and north along the Antrim Coast from a ferry entering [[Larne harbour]]
The Chaine Memorial Tower in Larne, County Antrim, Northern Ireland, is a memorial to James Chaine, a former Member of Parliament for Antrim, who died in 1885. It is a cylindrical stone tower lighthouse with a conical roof, situated on the west side of entrance to Larne Lough.
Chaine developed Larne's short sea route to Scotland as well as establishing the town as a transatlantic port. The memorial, built in 1888, by public subscription, is a replica of an Irish round tower. The memorial is situated at the mouth of Larne harbour, and is reached via Chaine Memorial Road. There is access from Curran Road via Bay Road.
Plaque
The inscription on the plaque adorning the monument is as follows:
:"....contributions of every class in this mixed community irrespective of creed or party, all cordially united in esteem and affection for the Memory of JAMES CHAINE of Ballycraigy and Cairncastle Co. Antrim who represented this County in the Imperial Parliament of Great Britain and Ireland from February 1874 till 4 May 1885 when his early and lamented death in his 44th year of his age deprived his native County of one who had worked indefatigably for its interests especially in developing and improving the natural capabilities of the harbour of Larne and establishing its connection with Great Britain, the United States of America and with the inland parts of this County."
Lighthouse
In 1885, the Memorial Committee for Chaine sought the assistance of the Commissioners of Irish Lights to help to build and maintain a tower, but they initially refused. Eventually it was agreed the Memorial Committee would build the replica round tower, without a light, at Sandy Point Bay, and the Larne Harbour authority would maintain it. The approved tower was completed in January 1888.
In 1896 it was suggested that a light be added to the tower. As a result, the Commissioners of Irish Lights took over the tower and on 1 July 1899, and converted to coal gas from the Larne mains gas supply in 1905, before finally being converted to electric in September 1935.