Viscount Esher, of Esher in the County of Surrey, is a title in the Peerage of the United Kingdom. It was created in 1897 for the prominent lawyer and judge William Brett, 1st Baron Esher, upon his retirement as Master of the Rolls. He had already been created Baron Esher, of Esher in the County of Surrey, in 1885, also in the Peerage of the United Kingdom. His son, the second Viscount, was a Liberal politician and historian. His grandson, the fourth Viscount, was a noted architect. As of 2010[update] the titles are held by the latter's son, the fifth Viscount, who succeeded in 2004.
The family seat is Beauforest House, near Newington, Oxfordshire.
The heir apparent is the present holder's son the Hon. Matthew Christopher Anthony Brett (b. 1963)
The heir apparent's heir apparent is his son Jack Alexander Baliol Brett (b. June 1996)