Happy Days is a 2018 Nepali drama and action romance film directed by Milan Chams, who was a UK-based filmmaker, and written by Yam Thapa. The film was presented by B.P. Khanal and produced by B.P. Khanal, Bhawani Sharma, Hiral Joshi and Milan Chams under the banners of London Cine Eyes and Chams Entertainment. It stars Dayahang Rai and Priyanka Karki in the lead roles, with Sanjay Gupta, Bikki Joshi, Diya Poon, Jenisha Limbu and Rupa Pun in supporting roles, and features Jane Buckle in a cameo.

Happy Days was released in cinemas on January 26, 2018, with a running time of 138 minutes. The film was made on a budget of about 2.5 crore rupees, which was a considerable sum for a Nepali film at the time. Notably, the movie was released in the United Kingdom, Australia and Hong Kong before it opened in Nepal, reflecting its international production setup.

The story follows a young Nepali man who is desperate to go to London to settle his life. When he finally reaches the British capital, he falls in love with a girl, and the film explores his experiences as a Nepali migrant adjusting to life abroad. The movie was shot in the United Kingdom, with director Milan Chams, himself a UK resident, bringing an authentic perspective to the story of the Nepali community overseas.

The film featured music by Tara Prakash Limbu and Rajan Raj Siwakoti, with lyrics by Naresh Bhattarai, Dinesh Raut and Rajan Raj Siwakoti. The song "Chepte Chepte" was released as a teaser to build anticipation before the film's release. Ram Kumar K.C. handled the cinematography, while action sequences were directed by Samrat Basnet.

Happy Days was director Milan Chams' fourth feature film as a director, following Hasiya (2014), Bir Bikram (2015) and Blind Rocks. The movie reunited Dayahang Rai and Priyanka Karki, who were among the biggest stars of Nepali cinema, and their onscreen partnership was a major attraction for audiences.

The film offers a glimpse into the lives of Nepalis living in the UK and remains a notable production in the careers of its lead stars.