PRINCE2

Definition: PRINCE2 is a project management methodology. It was developed by a UK government agency and is used extensively within the UK government as the de facto project management standard for its public projects. The methodology encompasses the management, control and organisation of a project.
P2 is also used to refer to the training and accreditation of authorized practitioners of the methodology who must undertake accredited qualifications to obtain certification.

More on prince2. More on project management: PMBOK, Project Management, RACI.