Nadine Lynette Garner (born 14 December 1970) is an Australian actress, known for her roles as Tamara in The Henderson Kids, Detective Senior Constable Jennifer Mapplethorpe in City Homicide, and Jean Beazley in The Doctor Blake Mysteries. She made her feature film debut in The Still Point (1986) and received an AFI nomination for Best Actress in a Lead Role for her role in Mull (1988). Garner has worked extensively in film, theatre and TV (both in Australia and the UK) and received awards and nominations for performances in each field.

Garner's first major role was in 1985 at age 15 as Tamara Henderson in The Henderson Kids, for which she won critical acclaim and several awards, including the Logie Award for Best Performance by a Juvenile. This was followed by a role in the soap opera Neighbours as Rachel Burns, and guest appearances in Prisoner and Prime Time. She played the lead role in the 1986 feature film The Still Point, and guested in episodes of The Flying Doctors and A Country Practice. She also appeared in two episodes of the four-part miniseries My Brother Tom as Jean Quayle. In August 1986, she reprised her role of Tamara Henderson and filmed the second season of The Henderson Kids, which was released the following year. Garner made her stage debut in the 1987 Melbourne Theatre Company production of A Day in the Death of Joe Egg.

Garner appeared in the 1987 Australian film Bushfire Moon, followed by Mull (1988) for which she won Best Actress at the 1988 Australian Film Institute Awards. She also starred in the television series House Rules. Garner played Arlene Toomer in the BBC comedy series Boys from the Bush for two series in 1991–1992. Further film roles include Metal Skin (1994), and Fresh Air (1999).

Garner has appeared in a series of minor and guest roles in multiple Australian and British television series, including The Bill, Shadows of the Heart miniseries, G.P., Twisted Tales, Good Guys Bad Guys, Raw FM, Tribe miniseries, Class Act, Water Rats, The Love of Lionel's Life telemovie, Changi miniseries – Ep.5, Heroes' Mountain telemovie, Young Lions, The Secret Life of Us, Stingers, My Life Is Murder and Through My Eyes miniseries.

Also interested in writing, she wrote and performed in the stage work Birds Eye View in Sydney in 2002. Garner has worked with most state theatre companies in a wide variety of roles in works by Shakespeare, Molière, Sheridan, Ibsen, Ziegler, Chekhov, Orton, Shaffer, Lawler and Elton. She also played the role of Desire in the highly controversial Australian musical Bad Boy Johnny and the Prophets of Doom.

In 2002–03, Garner played in a national tour of the musical Cabaret and received enthusiastic reviews—as well as two theatre awards—for her performance as "Fraulein Kost/Fritzi". From 2005 until 2006, she appeared in the Australian teen drama Blue Water High. She also appeared in feature films The Book of Revelation (2006), and Razzle Dazzle: A Journey into Dance (2007).

Garner played the regular role of Detective Senior Constable Jennifer Mapplethorpe in the police drama series City Homicide, from 2007 to 2011. In 2010, she returned to film, appearing in The Wedding Party.

Starting in February 2013, she starred as housekeeper Jean Beazley in The Doctor Blake Mysteries opposite Craig McLachlan. In September 2013, Garner appeared as Eve in episode four of the ABC1 television comedy series It's a Date.