Cecil Owen James Monro (8 April 1883 – 1 May 1966) was an Australian politician and a member of the New South Wales Legislative Assembly between 1932 and 1941 and 1950–53.
He initially worked as a clerk but later owned a real estate agency, hotels and an auctioneering business.
After two unsuccessful attempts, Monro was elected to the New South Wales Parliament as the United Australia Party member for Georges River.
He defeated the sitting Labor member Ted Kinsella at the 1932 landslide that swept away the government of Jack Lang.
Monro retained the seat until the 1941 election, when his defeat by Labor's Arthur Williams contributed to the fall of the conservative coalition government of Bertram Stevens.