Robert Andrew Loughnan (1 September 1841 – 14 September 1934) was a New Zealand farmer, journalist and politician. He was born in Patna, India on 1 September 1841. He emigrated with his father and his brothers to Australia at around 20 years of age. He was a Member of the New Zealand Legislative Council from 6 May 1907 (he was originally summoned on 22 January 1907, but was found to be disqualified) until 5 May 1914, which was the end of his seven-year term. Loughnan wrote a political biography of Joseph Ward. He died in Wellington on 14 September 1934 and is buried at Karori Cemetery.