NOPA

NOPA can refer to:


 * Norwegian Society of Composers and Lyricists, a society for Norwegian musicians
 * NOPA (wine), a technique to measure amino acids in grape juice
 * NOPA (optics), a technique in nonlinear optics
 * No possible agreement, the opposite of a zone of possible agreement
 * USS Oscar Austin, an American destroyer launched in 1998 (callsign NOPA)
 * National Office Products Alliance; see List of acronyms: N
 * National Office Products Association; see List of acronyms: N