The acronym SDP can stand for:

Social Democratic Party of Germany (more often known by the German abbreviation SPD)

Social Democratic Party (UK) of the United Kingdom, 1981-1988

Software development process

Sudetendeutche Partei SdP - German nationalist and then Nazi party in pre-WW2 Czechoslovakia.

Stochastic Dynamic Programming

Service Delivery Platform

Singapore Democratic Party

Social Democratic Party (Japan)

Social Democratic Party of Finland

Semidefinite programming An optimization procedure in mathematics.

Session Description Protocol

Social Democratic Party of Croatia

Social Democratic Party, may refer to one of many political parties in various countries. Some prominent examples include:

Social Democratic Party (Nigeria)

Sockets Direct Protocol

State Domestic Product

Service Discovery Protocol

Service Data Point (Intelligent Network)

Schadaraparr Japanese hip-hop group ([1]).

The Streaming Download Project, streaming media download software, primarily aimed at defeating restrictions that Microsoft's MMS protocol imposes on saving copies of streaming video.