RMH can refer to: Response modulation hypothesis, suggesting that psychopathy is an attention disorder. Royal Melbourne Hospital, Australia. Riyadh Military Hospital, Saudi Arabia. Ronald McDonald House, place to stay for families with hospitalized children. Roh Moo-Hyun, the former president of South Korea (9/1/1946 - 5/23/2009) https://en.wikipedia.org/wiki/RMH