PKA
PKA may refer to:
Napaskiak Airport (IATA code), airport in Napaskiak, Alaska
Professionally known as:
Pen name
Stage persona
pKa, the symbol for the acid dissociation constant at logarithmic scale
Protein kinase A, a class of cAMP-dependent enzymes
Pi Kappa Alpha, the North-American social fraternity
Public key authentication, establishing key authenticity in public-key cryptography
Professional Karate Association
Primary knock-on atom, an atom that is displaced from its lattice site by irradiation
Painkiller Already, a podcast featuring FPSRussia
Pentax KA-mount, a camera lens mount
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