Jemaine Atea Mahana Clement (born 10 January 1974) is a New Zealand actor, comedian, musician, and filmmaker. He has released several albums with Bret McKenzie as the musical comedy duo Flight of the Conchords, and created the comedy television series of the same name for both the BBC and HBO, for which he received six Primetime Emmy nominations.

He has had featured parts in films including Eagle vs Shark (2007), Gentlemen Broncos (2009), Men in Black 3 (2012), People Places Things (2015), Humor Me (2017), The Festival (2018), Avatar: The Way of Water (2022), Harold and the Purple Crayon (2024) and A Minecraft Movie (2025). He has also done voice work for Despicable Me (2010), Rio (2011) and Rio 2 (2014), Moana (2016), The Lego Batman Movie (2017), Thelma the Unicorn (2024) and Wildwood (2026). In 2014, he made his directorial debut with What We Do in the Shadows, which he also co-wrote, co-directed and co-starred in with Taika Waititi, and later adapted into a show for the FX television series What We Do in the Shadows.

Jemaine Atea Mahana Clement was born on 10 January 1974 in Masterton in Wairarapa, and was raised there in a working-class family by his mother and grandmother Maikara with his two brothers. Clement is of Māori (Ngāti Kahungunu) descent through his mother, and a direct descendant of the rangatira (chief) Iraia Te Ama-o-te-rangi Te Whaiti, who is his great-great-great grandfather. His Pākehā father, Robert, was employed at the freezing works and struggled with alcoholism, leaving home when Clement was a child. Robert would later become a stained glass artist in Midhirst, Taranaki; Clement would later reconnect with his father as an adult and now enjoys a "strong and loving" relationship with him.

Clement's mother and grandmother were strong influences on him as a child, inspiring his sense of humour. Despite having a strong connection to his Māori ethnicity through visiting relatives regularly on trips to various marae, bans on the Māori language being spoken in schools meant Clement grew up in an almost entirely English-speaking environment. He has talked of his regrets about this and has emotionally spoken of the physical abuse his grandmother suffered at school for speaking te reo Māori.

He attended Makoura College in Masterton. After finishing school he moved to Wellington, where he studied drama and film at Victoria University of Wellington. There he met Taika Waititi, with whom he went on to form So You're a Man and The Humourbeasts. In 2004, the Humourbeasts toured New Zealand in a stage show titled The Untold Tales of Maui, a reworking of the traditional Maori legends of Māui. The duo received New Zealand's highest comedy honour, the Billy T Award. During his time in university, he also met Bret McKenzie, with whom he performed in Edinburgh, thus forming Flight of the Conchords.

Clement and McKenzie have toured internationally and released four CDs: Folk the World Tour in 2002, The Distant Future EP in 2007 (winner of 2008 Grammy for Best Comedy Album), Flight of the Conchords in 2008 and I Told You I Was Freaky in 2009. In 2005 the Conchords produced Flight of the Conchords, a six-part comedy radio programme on BBC Radio 2. They appeared on Late Night with Conan O'Brien, the Late Show with David Letterman and The Late Late Show. After appearing in 2005 on HBO's One Night Stand, the Conchords were offered their own 12-part HBO series, Flight of the Conchords, which was based on their earlier BBC radio series. Its first season ran from June to September 2007, and was renewed for a second season, which aired on HBO in the US from January to March 2009. In December 2009, the Conchords announced the show would not have a third season.

Clement has appeared in several feature films. His debut was in the kung fu comedy Tongan Ninja, directed by New Zealander Jason Stutter. He has worked with Stutter on two more films to date: the low budget ghost comedy Diagnosis: Death and the drama Predicament, based on the book by late New Zealand novelist Ronald Hugh Morrieson. Clement also has a role in American comedy Gentlemen Broncos, directed by Napoleon Dynamite's Jared Hess. This role landed him a nomination for the Independent Spirit Award for Best Supporting Male. Though Gentlemen Broncos was almost universally panned by critics, some singled out Clement's performance for praise. In 2010, he voiced Jerry in Despicable Me and appeared in the film Dinner for Schmucks. In 2011, he voiced Nigel in Rio, and in 2012 he appeared as the primary antagonist Boris the Animal in Men in Black 3. In 2012, Jemaine co-wrote, co-directed, and starred in a vampire mockumentary titled What We Do in the Shadows with Taika Waititi. It premiered at the Sundance Film Festival on 19 January 2014. He also reprised his role as Nigel in Rio 2.

Clement has starred in television commercials internationally and provided voiceovers for many others in New Zealand. On 5 February 2006, Outback Steakhouse began running a series of television commercials starring Clement during Super Bowl XL in which Clement pretends to be Australian and feigns an Australian accent. One of the long-running gags of Flight of the Conchords is the traditional rivalry between New Zealand and Australia and the differences between their accents. The campaign ended in July 2006.