The Lowson Baronetcy, of Westlaws in the County of Perth, is a title in the Baronetage of the United Kingdom
The baronetcy was created on 27 June 1951 for the Old Wykehamist Denys Lowson, the youngest ever Lord Mayor of London elected, serving the Corporation's year 1950-51.
As of 2012 the title is held by his son, Sir Ian Patrick Lowson Bt OStJ, 2nd Bt. (born 4 September 1944), who succeeded in 1975. He was named to the Order of the Eagle of Georgia (exact rank unknown). He is Chairman of the Standing Council of the Baronetage. His wife, Lady Lowson, is a Patroness of the Royal Caledonian Ball.