K20

K20 may refer to:
 * K-20 (Kansas highway)
 * K-20: Legend of the Mask, a 2008 Japanese film
 * K20 Center, an American research institute
 * Fairchild K-20, an aerial camera used during World War II
 * HMS K20, an M-class submarine of the Royal Navy
 * Kaman K-20, an American helicopter
 * Redmi K20, a Chinese smartphone
 * K20, a model of Honda K engine