Nina Josie Robertson (born 21 October 1996) is an Australian model and beauty pageant titleholder who won Miss Earth Australia 2017.

[1][2] Robertson previously competed in Mutya ng Pilipinas 2015 pageant held in Resorts World Manila in Pasay, Philippines on August 2, 2015.

[3] Robertson won the title of Miss Earth Australia 2017 against 21 candidates during the pageant finale held in The Grand Ballroom in Crowne Plaza Terrigal in New South Wales on September 2, 2017.

Robertson represented Australia at the international Miss Earth 2017 pageant in Pasay, Philippines and competed with 84 delegates.

She won the elemental title Miss Earth – Air 2017 during the pageant final.