List of viscounts in the peerages of Britain and Ireland

This is a list of the 110 present and extant Viscounts in the Peerages of England, Scotland, Great Britain, Ireland, and the United Kingdom. Note that it does not include extant viscountcies which have become merged (either through marriage or elevation) with higher peerages and are today in use only as subsidiary titles. For a more complete list, which adds these "hidden" viscounties as well as extinct, dormant, abeyant, and forfeit ones, see List of Viscountcies.

Order of precedence
The general order of precedence among Viscounts is:
 * 1) Viscounts in the Peerage of England
 * 2) Viscounts in the Peerage of Scotland
 * 3) Viscounts in the Peerage of Great Britain
 * 4) Viscounts in the Peerage of Ireland created before 1801
 * 5) Viscounts in the Peerage of the United Kingdom and Viscounts in the Peerage of Ireland created after 1801