Mohammad Ridwan Hafiedz or Ridho (born September 3, 1973, Ambon, Indonesia) is an Indonesian guitarist, backing vocalist and songwriter.

His musical background is considered active back when he was in middle school as he started to play guitar since year 7.

As mentioned above, Ridho started to play guitar when he was in year 7, with Jimi Hendrix and The Beatles as his idols.

His experience in the music industry began when he formed a band called LFM in 1991, just six years before he joined Slank.

The problem arose from the drug addictions of Bimbim (drummer) and Kaka (lead vocalist).