Izaak Ziven Sayid Golding Bastian (born 3 January 2001) is a Bahamian swimmer.

[2] At the 2022 Commonwealth Games, held in July and August in Birmingham, England, Bastian served as a flag bearer for the Bahamas at the Opening Ceremony.

[3] Two days later, as part of swimming at the 2022 Commonwealth Games, he placed 23rd in the 100 metre breaststroke with a time of 1:04.07.

[4][5] On 1 August, he swam a time of 28.74 seconds in the preliminaries of the 50 metre breaststroke and placed 20th overall.

He is on track to graduate with his doctorate in 2025 and has a professional interest in completing an Orthopedic residency the year following.