
Gugudan SEMINA (SEjeong, MIna, NAyoung) [구구단 세미나]
- Debut (Y-M-D): 18-07-10
- Disbanded: 20-12-31
- Label: Jellyfish Entertainment
- Main Group: Gugudan
- Music Videos:
- Korean MVs: Semina (세미나)
- Albums:
- Korean: Semina [Single Album]
- Logo:

Members:

- Stage Name (Hangul): Nayoung (나영)
- Position: Vocal
- Represented by: #4 – astric/light
- Real Name: Kim Nayoung (김나영)
- Birthday (Y-M-D): 95-11-23
- Nationality: Korean
- Height: 169cm
- Blood Type: O


- Stage Name (Hangul): Mina (미나)
- Position: Vocal, Rap, Maknae
- Represented by: #9 – pinwheel
- Real Name: Kang Mina (강미나)
- Birthday (Y-M-D): 99-12-04
- Nationality: Korean
- Height: 162cm
- Blood Type: O
- Also in: Gugudan OGUOGU
- Formerly in: I.O.I
Social Media + :
Members:
- Nayoung: IG – kny_951123
- Sejeong: IG – clean_0828
- Mina: IG – _happiness_o