K. alvarezii is a marine product commodity that has high economic value. The aim of this study was to perform tissue culture on K. alvarezii. The research method was carried out experimentally and descriptively. The callus induction process used concentrations of growth regulators (A) BAP (6-benzylaminopurine) 0.5 ml + IAA (Indole-3-acetic acid) 1.25 ml, (B) Kinetin 0.01 ml + 2.4 D 2 ,4-dichlor…