HALO (헤일로; skrót od Hexagon of Absolute Light and Organisation) to południowokoreańska grupa chłopców założona przez Histar Entertainment w Seulu w Korei Południowej. Grupa składa się z sześciu członków: Dino, Inhaeng, Ooon, Jaeyong, Heecheon i Yoondong. Zadebiutowali 26 czerwca 2014 r. z singlem „Fever”.

Name (Real Name): Dino (Jo Sungho)
Hangul:디노
Position: Vocal
Birthday (Y.M.D): 91.12.25
Nationality: Korean
Height: 176cm (5ft 9in)
Weight:N/A
Blood Type: O

Name (Real Name): In Haeng (Lee In Haeng)
Hangul:인행
Position: Rap
Birthday (Y.M.D): 92.04.21
Nationality: Korean
Height: 186cm (6ft 1in)
Weight:N/A
Blood Type: O

Name (Real Name): Ooon (Jung Younghoon)
Hangul:오운
Position: Vocal, Leader
Birthday (Y.M.D): 93.01.15
Nationality: Korean
Height: 180cm (5ft 10in)
Weight:N/A
Blood Type: B

Name (Real Name): Jae Yong (Kim Jae Yong)
Hangul:재용
Position: Vocal
Birthday (Y.M.D): 94.02.13
Nationality: Korean
Height: 185cm (6ft)
Weight:N/A
Blood Type: O

Name (Real Name): Hee Cheon (Kim Hee Cheon)
Hangul:희천
Position: Vocal
Birthday (Y.M.D): 94.09.02
Nationality: Korean
Height: 186cm (6ft 1in)
Weight:N/A
Blood Type: B
Sub-Unit: N/A

Name (Real Name): Yoon Dong (Kim Yoon Dong)
Hangul:윤동
Position: Rap, Maknae
Birthday (Y.M.D): 95.02.20
Nationality: Korean
Height: 176cm (5ft 9in)
Weight:N/A
Blood Type: A