Original Korean Title: 괴기맨숀
Transliterated Title: Goe-gi-maen-syon
International title: Ghost Mansion
Origin: South Korea
https://www.imcdb.org/movie_14895216-Goe-gi-maen-syon.html

Original Korean Title: 해피뻐스데이
Transliterated and International title: Happy Bus Day
Origin: South Korea
https://www.imcdb.org/movie_6150050-Happy-Bus-Day.html

Original Korean Title: 낙인
Transliterated Title: Nak-in
International title: Fallen
Origin: South Korea
https://www.imcdb.org/movie_8433082-Fallen.html
https://www.kmdb.or.kr/db/kor/detail/movie/K/21668

Original Korean Title: 밤의 해변에서 혼자
Transliterated Title: Bamui haebyun-eoseo honja
International title: On the Beach at Night Alone
Origin: South Korea
https://www.imcdb.org/movie_6412864-Bamui-haebyun-eoseo-honja.html

Original Korean Title: 반도의 봄
Transliterated Title: Ban-do-ui bom
International title: Spring on the Korean Peninsula
Origin: South Korea
https://www.imcdb.org/movie_3763958-Ban-do-ui-bom.html

Original Korean Title: 지옥화
Transliterated Title: Jiokhwa
International title: Flower in Hell
Origin: South Korea
https://www.imcdb.org/movie_389052-Jiokhwa.html

Original Korean Title: 초우
Transliterated Title: Chowoo
International title: Chou
Origin: South Korea
https://www.imcdb.org/movie_308116-Chowoo.html

Original Korean Title: 눈길
Transliterated Title: Nun-gil
International title: Snowy Road
Origin: South Korea
https://www.imcdb.org/movie_8216024-Nun-gil.html

Original Korean Title: 파닥파닥
Transliterated Title: Pa-dak pa-dak
International title: Swimming to Sea
Origin: South Korea
https://www.imcdb.org/movie_2164058-Pa-dak-pa-dak.html

Original Korean Title: 과속스캔들
Transliterated Title: Kwa-sok-seu-kaen-deul
International title: Speed Scandal
Origin: South Korea
https://www.imcdb.org/movie_1360795-Kwa-sok-seu-kaen-deul.html

Original Korean Title: 밤과 낮
Transliterated Title: Bam gua nat
International title: Night and Day
Origin: South Korea
https://www.imcdb.org/movie_1176096-Bam-gua-nat.html

Original Korean Title: 인천상륙작전
Transliterated Title: In-cheon sang-ryuk jak-jeon
International title: Operation Chromite
Origin: South Korea
https://www.imcdb.org/movie_4939066-In-cheon-sang-ryuk-jak-jeon.html

Original Korean Title: 실미도
Transliterated and International Title: Silmido
Origin: South Korea
https://www.imcdb.org/movie_387596-Silmido.html

Original Korean Title: 서울의 휴일
Transliterated Title: Seoului hyuil
International title: Holiday in Seoul
Origin: South Korea
https://www.imcdb.org/movie_396209-Seoului-hyuil.html

Origin: Australia

https://www.imcdb.org/movie_8116640-Go%21.html
https://www.imcdb.org/movie_9729768-June-Again.html

Original Tamil title: பட்டத்து ராணி
Origin: India
IMDb page: https://www.imdb.com/title/tt41378486/
https://www.imcdb.org/movie_1004520783-Pattathu-Raani.html

Original Hindi title: तोहफा
Origin: India
https://www.imcdb.org/movie_125556-Tohfa.html

Original Telugu title: మట్టిలో మాణిక్యం
Origin: India
https://www.imcdb.org/movie_259428-Mattilo-Manikyam.html

Orignal Kannada title: ಲಕ್ಷಧೀಶ್ವರ
Origin: India
IMDb page: https://www.imdb.com/title/tt28997011/
https://www.imcdb.org/movie_1004523089-Lakshadheeshwara.html

Original Hindi title: बलिदान
Origin: India
https://www.imcdb.org/movie_186850-Balidaan.html

Original Bengali title: আশা নিরাশা
Origin: Bangladesh
https://www.imcdb.org/movie_1004523259-Asha-Nirasha.html

Origin: Indonesia

https://www.imcdb.org/movie_99456-Double-Crosser.html
https://www.imcdb.org/movie_280671-Final-Score.html
https://www.imcdb.org/movie_281587-American-Hunter.html

Origin: India

https://www.imcdb.org/movie_292490-Dil-Chahta-Hai.html

Origin: USA

https://www.imcdb.org/movie_118842-Chasing-Amy.html

Original Oriya title: କିଏ କାହାର
Origin: India
https://www.imcdb.org/movie_249651-Kie-Kahara.html

Original Tamil title: சிவாஜி
https://www.imcdb.org/movie_479751-Sivaji.html

Original Tamil title:சட்டம் என் கையில்
Origin: India
https://www.imcdb.org/movie_274792-Sattam-En-Kaiyil.html

Origin: Australia

https://www.imcdb.org/movie_1004523517-Mainly-for-Women.html
https://www.imcdb.org/movie_1617059-Cockroach.html
https://www.imcdb.org/movie_1316536-The-Loved-Ones.html

Origin: Australia

https://www.imcdb.org/movie_2011048-Hunted.html

Origin: Canada and TV show ended in 2020:

https://www.imcdb.org/movie_3526078-Schitt-s-Creek.html

This thread is more for updating main titles rather than filling the whole list of IMDb alternative titles to each movie. If each movie gets reported here for its alternative local titles, it would be an infinite task for me to each time add all these, and it is not so useful to have all (I think).