The Houstoun, later Houstoun-Boswall Baronetcy, is a title in the Baronetage of the United Kingdom.
The title was created on 19 July 1836 for General William Houstoun. The second Baronet was a Colonel in the Grenadier Guards. In 1847 he assumed by Royal licence the additional surname of Boswall on his marriage to Euphemia, daughter of Thomas Boswall. The sixth Baronet, whose father Colonel Thomas Alford Houston-Boswall-Preston had assumed by Royal licence the additional surname of Preston in 1886, discontinued the use of the surname Preston in 1953. The family surname is pronounced "Hooston-Boswall".
Houston, later Houston-Boswall baronets (1836)
- Sir William Houstoun, 1st Baronet (1766–1842)
- Colonel Sir George Augustus Frederick Houstoun-Boswall, 2nd Baronet (1809–1886)
- Sir George Lauderdale Houstoun-Boswall, 3rd Baronet (1847–1908) served as a captain, Grenadier Guards. He married Phoebe Mary, daughter of Sir Hugh Allan, of "Ravenscrag" at the Church of St. James the Apostle, Montreal, March ist, 1877. The couple had one daughter and two sons.
- Sir George Reginald Houstoun-Boswall, 4th Baronet (1877–1915). He was killed in World War I, leaving a widow Naomi (née Anstey) and infant daughter Phoebe. Their lived at 2 Cornwall Terrace, Regent's Park, London, now named Boswall House.
- Sir Thomas Randolph Houstoun-Boswall, 5th Baronet (1882–1953) (second son of the 3rd Baronet). Both his sons predeceased him, one died in infancy and the other in World War II. The title then passed to his cousin.
- Sir Gordon Houstoun-Boswall, 6th Baronet (1887–1961) (grandson of 2nd Baronet)
- Sir Thomas Houstoun-Boswall, 7th Baronet (1919–1982)
- Sir (Thomas) Alford Houstoun-Boswall, 8th Baronet (born 1947)
The heir apparent is Alexander Alford Houstoun-Boswall (born 1972)
- Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990.
- Leigh Rayment's list of baronets