Alistair Garth Dryden (born 18 December 1942) is a former New Zealand rower. Dryden was born in 1942 in Auckland, New Zealand. The wrestler Jim Dryden (1907–1974) was his father. He received his education at King's College. The same coxed four team then went to the 1964 Summer Olympics in Tokyo, where they placed a disappointing eighth. At the 1968 Summer Olympics in Mexico he was part of the men's eight that came fourth in the final. Dryden was later the president of the Auckland Rowing Club. Dryden's son, Murdoch Dryden, would later represent New Zealand at World Rowing Championships.