Shika (or Shiko) Kakugen (or Shika no Kakugen) (Four Criticisms) refers to the criticisms expressed by Nichiren, the founder of Nichiren Buddhism, against other Buddhist sects that existed in his time.
四箇格言（しか、しこ・かくげん、しかのかくげん）とは、日蓮宗の宗祖日蓮が他の仏教宗派を批判したものである。