The Porter, later Horsbrugh-Porter Baronetcy, of Merrion Square in the City and County of Dublin, is a title in the Baronetage of the United Kingdom. It was created on 24 July 1902 for the Irish lawyer, judge and Liberal politician Andrew Porter.^[1] He served as Solicitor-General for Ireland from 1881 to 1882, as Attorney-General for Ireland from 1882 to 1883 and as Master of the Rolls for Ireland from 1883 to 1906. The second Baronet assumed the additional surname of Horsbrugh in 1911.

• Sir Andrew Marshall Porter, 1st Baronet (1837–1919)
• Sir John Scott Horsbrugh-Porter, 2nd Baronet (1871–1953)
• Sir Andrew Marshall Horsbrugh-Porter, 3rd Baronet (1907–1986)
• Sir John Simon Horsbrugh-Porter, 4th Baronet (1938–2013)
• Sir (Andrew) Alexander Marshall Horsbrugh-Porter, 5th Baronet (born 1971)

The heir apparent is the present holder's only son William John Ernest Horsbrugh-Porter (born 2006).

Coat of arms of Horsbrugh-Porter baronets

Notes Granted 1 September 1902 by Sir Arthur Edward Vicars, Ulster King of Arms[2] Crest On a wreath of the colours on a fasces fesswise a cherub Proper. Escutcheon Argent on a bend Azure three bells of the field in chief a portcullis and in base two keys in saltire Sable. Motto J'ayme Porter Sacours

• Porter baronets

• Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990, ^{[page needed]}
• This page incorporates information from Leigh Rayment's Baronetage Page which has further dates on it, not shown above.