God's Not Dead: A Light in Darkness is a 2018 American Christian drama film written and directed by Michael Mason. It is a sequel to 2016's God's Not Dead 2, and the third installment overall in the God's Not Dead film series. It stars David A. R. White, John Corbett, Shane Harper, Benjamin Onyango, Ted McGinley, Jennifer Taylor, Tatum O'Neal, Shwayze and Cissy Houston.

The film follows the others' Christian persecution complex theme, and is loosely based on the story of five pastors in Texas who were issued subpoenas for sermons, due to potential violation of the Johnson Amendment. Unlike in the film, in reality the subpoenas were soon dropped; since 2008 only one of more than 2,000 mainly evangelical Christian clergy deliberately violating the law has been audited, and none punished.

Principal photography was completed in Little Rock, Arkansas, in December 2017. It was released in the United States on March 30, 2018, and received generally unfavorable reviews from critics. The film made less in its entire theatrical run ($7.4 million) than each of the previous two grossed in their respective domestic opening weekends ($9.7 million and $7.6 million). It brought the cumulative gross of the film series to $96.6 million worldwide.

A sequel titled, God's Not Dead: We the People, was released in October 2021.