Provided are novel quinolinone compounds, pharmaceutical compositions containing the compounds, processes for the preparation of the compounds, and their use as FGFR inhibitors of the compounds, and their use in the treatment of diseases such as cancer.新規キノリノン化合物、上記化合物を含む医薬組成物、上記化合物の調製のプロセス、並びに上記化合物のFGFR阻害剤としての使用、及び疾病、例えば、癌の治療におけるそれらの使用が提供される。