Sir Howard Hugh Panter is a British theatre impresario and theatre operator. With his wife Rosemary Squire he ran the Ambassador Theatre Group from about 1995 until 2016; they remain directors and shareholders of the company. When they left the active management of ATG, they bought Trafalgar Studios (the former Whitehall Theatre), which became the centre of a new company, Trafalgar Entertainment.In a guide to "the 100 most influential people in UK theatre" published by The Stage, Panter and Squire were placed first each year from 2010 to 2016. In 2013 they were placed first in the theatre section of the Evening Standard 'Power 1000'.Panter received a knighthood in the 2013 Birthday Honours.