SPDC

SPDC has multiple meanings, including:

Self-Protecting Digital Content
Shell Petroleum Development Company of Nigeria
State Peace and Development Council, the military regime of Myanmar (also known as Burma)
Spontaneous parametric down-conversion, a process in quantum optics
Social Policy and Development Centre, an economic policy research institution in Pakistan
Steorn Private Developers Club
Scholarship Programme for Diaspora Children, a scholarship given by the Indian Government to the People of Indian Origin and NRIs.