Su Rynard (born 1961) is a Canadian film and television director, editor and video artist.^[1] She is most noted as the director of the 2005 feature film Kardia,^[2] which was the winner of the Alfred P. Sloan Foundation Feature Film Prize at the 2005 Hamptons International Film Festival.^[3]

The niece of Canadian experimental filmmakers Michael Snow and Joyce Wieland,^[4] she began her career as a video artist in the 1980s,^[5] associated with Trinity Square Video^[6] and the YYZ Gallery art collective.^[7]

In the 1990s she had editing credits on Cynthia Roberts's films The Last Supper and Bubbles Galore,^[8] and directed the short films Signal (1993), Big Deal, So What (1995),^[9] Eight Men Called Eugene (1996),^[10] and Strands (1997),^[11] before graduating from the Canadian Film Centre in 1997.^[12] Her short films, united by themes of the relationship between science and life, were also later screened together as the anthology package Life Tests.^[13]

She released her full-length debut documentary Dream Machine, a profile of musician Roberta Michele, in 2000.^[14] She subsequently worked on various documentary television series before releasing Kardia in 2005.^[2] From 2008 to 2015, she directed numerous episodes of the documentary series Air Crash Investigation.

In 2015 she released the documentary film The Messenger, profiling the environmental threats to songbirds.^[15] In 2021 she released Duet for Solo Piano, a profile of pianist Eve Egoyan.^[16]

Her television documentary Reef Rescue, about efforts to save coral reefs from environmental destruction, was broadcast in 2020 as an episode of The Nature of Things,^[17] and in 2021 as an episode of Nova.