John Augustus George Ryrie (21 December 1886 – 1 June 1927) was a two-time Australian national champion rower who represented Australasia at the 1912 Summer Olympics.

Jack was educated at The King's School in Sydney, where he distinguished himself in his studies and the sporting fields of cricket, rowing, and football.

[5] The following year, Ryrie was a member of the Australasian eight which represented at the 1912 Summer Olympics in Stockholm.

[8] The overseas tour wasn't totally a loss as before the Olympics, he was part of the Sydney Rowing Club eight which won the 1912 Grand Challenge Cup at the Henley Royal Regatta.

[2] On 1 June 1927, playing polo at the Gilgandra carnival, he cut across two players while riding hard for the ball.