Momoa directed and co-wrote Road to Paloma (2014), an American drama thriller film, together with writers Jonathan Hirschbein and Robert Homer Mollohan. The film stars Momoa, Sarah Shahi, Lisa Bonet, Michael Raymond-James, and Wes Studi. It premiered at the 2014 Sarasota Film Festival in April 2014. The film had a limited theatrical release on July 15, 2014 in New York City and Los Angeles and a VOD release.
In March 2014, Momoa joined the dark comedy/thriller indie Sugar Mountain alongside Cary Elwes and Haley Webb; its principal photography was done in Alaska. He also starred as Phillip Kopus, a Ramapough Mountain Indian, on the SundanceTV drama series The Red Road (2014–2015).
In June 2014, Momoa was reported to have been cast in the role of Aquaman. He first played the role in a cameo in the superhero film Batman v Superman: Dawn of Justice, marking Aquaman's live action theatrical debut. Momoa played the character in a leading role in the 2017 ensemble film Justice League. He then starred in the Aquaman solo film, which released in late 2018. He also reprised this role in The Lego Movie 2: The Second Part.
In 2014, Momoa portrayed Connor in the Canadian horror action film Wolves, and starred in the Sci-fi horror movie Debug; it was written and directed by Momoa's former Stargate Atlantis co-star, British-born Canadian actor David Hewlett. In February 2015, it was announced that he would portray a cannibal in the drama thriller film The Bad Batch. In 2015, Momoa was cast in the Canadian action film Braven, which was released on February 2, 2018.