Letter to Hong Kong
- År: 2018
- Land: South Korea
- Genre: Documentary, Mysterium
- Studio: Blockberry Creative, Digipedi
- Nøgleord: k-pop, short film, music
- Direktør: Seong Wonmo, Moon Seokho, DIGIPEDI
- Cast: Jeon Hee-jin, Kim Hyun-jin, Cho Ha-seul, Wong Ka-Hei, Jeong Jin-sol