Henry Kenneth Woolf, Baron Woolf, PC (born May 2, 1933), is the current Lord Chief Justice of England and Wales, making him the second most senior judge in England and Wales after the Lord Chancellor.

He became a barrister in 1954, a High Court judge in 1979, a Law Lord in 1992, and Master of the Rolls in 1996. He succeeded Lord Bingham of Cornhill as Lord Chief Justice in 2000.

He has been outspoken in this job. In 2004 in a speech at Cambridge University he spoke out against passing the Constitutional Reform Act 2005, which will create a Supreme Court of the United Kingdom to replace the House of Lords as the final court of appeal, and severely questioned the Lord Chancellor's and the Government's handling of recent constitutional reform.

He was also the head of the committee that excised many of the remaining latin terms from English law, in an attempt to make it more accessible (such as changing the ancient word 'plaintiff' to the comparatively unexciting 'claimant').

He is a supporter of prison reform.