Manic depressive psychosis, also known as Bipolar Disorder

Management Development Program, McDonald's (New Zealand)'s four volume program for training employees to become managers. This program has been replaced by a new program in 2006 with SSC (Shift Supervisor's Course) replacing MDP1.

The Ministry of Defence Police in the UK.

Markov decision process

Maldivian Democratic Party

Manic Depressive Psychosis (band), also known as MDP

Media Dispatch Protocol

The Multidisciplinary design project, an education initiative funded by the Cambridge-MIT Institute.

Movimento Democrático Português or the Portuguese Democratic Movement

Methylene diphosphonate, a pharmaceutical product used especially in nuclear medicine