London School of Economics and Political Science (MSc) Martin Richard John Knapp, CBE (born 8 August 1952) is an economist and policy analyst whose research, teaching and consultancy activities are concentrated in the areas of health and social care.

[2] Knapp's current research specialises in mental health economics and policy (including financing, patterns of provision, mental health and employment, social exclusion, cost-effectiveness evaluations and international comparisons), and social care policy and practice (including consumer-directed services, financing arrangements and evaluation of service initiatives).

[7] Knapp is a chair of the Scientific Advisory Board of the Horizon 2020 project PECUNIA, aiming to establish standardised costing and outcome assessment measures for optimised national healthcare provision in the European Union.

[8] Knapp was appointed Commander of the Order of the British Empire (CBE) in the 2022 New Year Honours for services to social care research.

[16] While on vacation in the United States, Knapp also came third in the Manufacturers Hanover five-borough five-mile challenge run April 12, 1981 at Clove Lake Park in Staten Island, New York, in a time of 26 minutes and 21 seconds.