mohammad isnaeni ( – ) is an indonesian politician from the indonesian national party (pni) and indonesian democratic party (pdi). he was appointedd as the "de facto" chairman of the indonesian national party from 1971 until 1973, and continued his career as the chairman of the indonesian democratic party from 1973 until 1975 after the fusion of pni into pdi. he was also one of the longest deputy speaker of the people's representative council, serving for four consecutive terms from 1966 to 1982.