Janice Vivienne Hadlow (born 1957 in Lewisham) is a British television executive. She was the controller of the BBC television channel BBC Two, taking over this position in November 2008 having previously been controller of BBC Four. At the beginning of March 2014 she assumed a new post within the BBC responsible for special projects and seasons. Hadlow's post was abolished when she left the BBC in 2016.
Hadlow was educated at comprehensive school in Swanley, in north Kent, and graduated with a BA in History from King's College London in 1978. She then spent time as a Postgraduate History Researcher at Royal Holloway, University of London (1978–81).
Hadlow began her media career with the BBC in 1986 as a production trainee. For two years between 1987 and 1989 she was a producer for BBC Radio 4 in the Current Affairs and Magazines department, where she produced Woman's Hour before moving to television. She worked in the BBC's Music and Arts department between 1993 and 1995 before become joint-head of the History department. One of the television shows she helped to create in this period was Simon Schama's A History of Britain.
In 1999 Hadlow moved to Channel 4 where she became Head of History, Art and Religion. being involved with David Starkey's The Six Wives of Henry VIII series. She later became Head of Specialist Factual.
She returned to the BBC as Controller of BBC Four after five years and specialised in commissioning programmes concerning factual genres such as history, science and religion. In 2004 The Observer included Hadlow in a list of 80 young people who they believed would shape people's lives in the early 21st Century and in 2006 sister-paper The Guardian praised her for her work over the preceding 18-months at BBC Four.