What does TPK stand for?

Test of Practical Knowledge

Total Performance Kit

Tropicair Cargo - Burundi - FAA designator (FAAC)

Tulare Free Public Library, Tulare, CA - OCLC symbol (OCLC)

Tupinikin - Language code (ETLW)

Turnpike

Turns per Knot - Navy (CAAL)

Turnpike (MIST)