Breakthrough (2016–2019)
Lowden portrayed Nikolai Rostov, one of the main characters, in the 2016 BBC miniseries War & Peace. The 6-part miniseries, which was broadcast around the world and positively reviewed, garnered Lowden the most exposure he had had thus far in his career.
In film he played the title role in Tommy's Honour (2016), about legendary Scottish golfing champion Old Tom Morris, played by Peter Mullan, and his complex and bittersweet relationship with his son Tom "Tommy" Morris Jr.; Lowden was nominated for Best Film Actor at the 2016 BAFTA Scotland Awards for his performance. He also portrayed British politician Tony Benn in a supporting role in A United Kingdom, a 2016 film about Seretse Khama and Ruth Williams Khama. In another supporting role, he was one of star Rachel Weisz's character's attorneys in Denial (2016), a fact-based legal-drama film about Holocaust denial which also starred Andrew Scott.
In April 2016, he was a finalist in the entertainment category at the 11th Young Scot Awards. In November 2016, the UK arts and entertainment magazine The List featured Lowden as one of The Hot 100 2016.
He played a Royal Air Force fighter pilot, one of the leading roles, in Christopher Nolan's World War II film Dunkirk, released in July 2017. And he portrayed Morrissey in a biopic of the singer titled England Is Mine, written and directed by Mark Gill; the film, which co-stars Jessica Brown Findlay, premiered at the closing gala of the Edinburgh International Film Festival on 2 July 2017 and went into wide release in August 2017.
He co-starred with Martin McCann in a Scottish thriller, Calibre (2018), which began filming in November 2016, debuted at the 2018 Edinburgh International Film Festival, and was released globally on Netflix on 29 June 2018. Guy Lodge in Variety wrote of his performance, "[A] lead performance of through-the-wringer commitment by rising Scots star Jack Lowden. ... An Olivier Award-winning stage actor now settling into a quietly potent, empathetic screen presence, Lowden impressively holds it together through all these key changes, even when his character emphatically does not." Lowden won the 2018 British Academy Scotland Award for Best Film Actor for the performance.
On stage, from 28 September to 24 November 2018, Lowden starred opposite Hayley Atwell in Shakespeare's Measure for Measure, at the Donmar Warehouse in London, directed by Josie Rourke. It was a unique gender-reversal production of the work, and he and Atwell alternated the roles of Angelo and Isabella during the play. On television, in December 2018 he co-starred with Tamara Lawrance and Hayley Atwell, in a three-part BBC adaptation of Andrea Levy's novel The Long Song, about a slave on a sugar plantation in 19th-century Jamaica; the piece was filmed on location in the Dominican Republic.
He portrayed Lord Darnley in Mary Queen of Scots (2018), opposite Saoirse Ronan and directed by theatre director Josie Rourke, and Zak "Zodiac" Bevis in the 2019 comedy-drama WWE film Fighting with My Family, opposite Florence Pugh and directed by Steve Merchant. He appeared as FBI agent Crawford in the Al Capone biopic Capone (2020), starring his Dunkirk co-star Tom Hardy.
In February 2019, Lowden teamed up with Beta Cinema to form his own production company, Reiver Pictures, based in Edinburgh. This led to the production of a psychological thriller, Kindred, in which Lowden also starred alongside Tamara Lawrance and Fiona Shaw. He portrayed Siegfried Sassoon in the 2022 biopic Benediction.