Gulustan Mahmood Ieso (born 1 August 1991), also known as Kolestan Mahmoud, is an Iraqi track and field athlete who competes in sprinting events.

She holds a number of Iraqi records and helped win her country's first ever women's medals at the Asian Athletics Championships in 2011.

[4] With a team featuring Zhilan Salah Mahmood, Dana Hussein Abdul-Razzaq and Alaa Jassim, she won the West Asian Championships with a new national relay record of 3:43.60 minutes.

She was chosen to compete at the 2011 Asian Athletics Championships: she set a 200 m personal best of 24.25 seconds in the heats, but was disqualified in the finals.

[6] She helped double that tally later in the competition as Iraq's 400 m relay team won the bronze medal in another Iraqi record time of 3:41.91 minutes.