Ronald Hanmer (2 February 1917 – 23 May 1994) was a British conductor, composer and arranger of light music, who spent his latter years in Australia. He was best known for his themes to the Adventures of P.C. 49 and Blue Hills, and is also noted for his large oeuvre of light orchestral and brass band compositions, as well as his arrangements of popular stage musicals.

He was born in Reigate, Surrey and studied at Blackheath Conservatory. Between 1935 and 1948 he was a theatre organist and dance band arranger. After emigrating to Australia in 1975, he was an arranger and conductor for the St Lucia Orchestra in Brisbane. He died in Brisbane on 23 May 1994.