Masahiro Ohno is a Roland engineer who contributed to the company's modular and semi-modular synthesizer systems of the 1970s, instruments that brought Japanese engineering to the analog synthesis market alongside American and European competitors.

Ohno worked on the System-100, a semi-modular synth designed for education and studio use, offering patch points for flexibility within an integrated cabinet. He also contributed to the System-700, Roland's flagship full modular system aimed at professional studios requiring maximum configurability.

These systems established Roland's early reputation in analog synthesis before the company pivoted toward the compact monophonic SH-series, polyphonic Juno and Jupiter lines, and the digital revolution of the mid-1980s.

Notable products: Roland System-100, System-700.