The 2018 1 oz Gold Kangaroo coin is a gold bullion coin produced by Australia's Perth Mint. Each coin weighs 1 troy ounce and has a gold purity or fineness of 0.9999, i.e. 99.99% pure gold. 

The Perth Mint is both a mint and a refinery, and operates one of the largest and best known gold refineries in the world. The Perth Mint's refinery is accredited to the of the London Bullion Market Association's (LBMA) Good Delivery List for gold.

Each year, the kangaroo imagery on the Kangaroo Gold Bullion series of coins changes, which explains its popularity with both collectors and gold investors alike. The 1 oz Gold Kangaroo bullion coin is produced in an unlimited mintage.

For 2018, the obverse of the 1 oz gold Kangaroo features a stylised design of two Kangaroos bouding across an Australian rural landscape. The imagery is inscribed at the top by the words 'AUSTRALIAN KANGAROO', and includes a ‘P’ mint mark signifying Perth. The obverse also displays the coin's year '2018', weight '1 oz', and the coin's purity '9999 GOLD' .

The reverse face of the Gold Kangaroo coin features a Ian Rank-Broadley designed head portrait of the official head of state of Australia, Queen Elizabeth II, and the coin's face value of '100 dollars'. 

Gold Kangaroo bullion coins are non-circulating legal tender in Australia and are issued under the Australian Currency Act of 1965