Arthur Blacklock (1868 – 20 October 1934) was a cricketer who played first-class cricket for Wellington in New Zealand from 1885 to 1895. Arthur Blacklock was a solid batsman, "very hard to dispose of". He played his first first-class match when he was 16 or 17, top-scoring with 22 in Wellington's first innings against Nelson in 1884-85. He made his highest score of 69, also the highest score in the match, for Wellington when they defeated Nelson by an innings and 190 runs in 1888-89.