Sarah Joelle Gregorius (born 6 August 1987), is a New Zealand association football player who plays for Miramar Rangers and has represented New Zealand at international level.

Gregorius completed a master's degree at Massey University, with a thesis exploring cultural distance in female footballers.

Gregorius was a member of the New Zealand side at the 2006 FIFA U-20 Women's World Championship, playing in all three games at the finals in Russia, where they lost to Australia (0–3) and Russia (2–3), before holding Brazil to a goalless draw.

She made her senior Football Ferns debut in a 14–0 win over Vanuatu in the Oceania Women's Nations Cup on 29 September 2010. She scored her first senior international goal in her second appearance as she claimed a hat-trick in a 10–0 win over Cook Islands on 1 October 2010.

She played all New Zealand's matches at the 2011 FIFA Women's World Cup in Germany and 2015 FIFA Women's World Cup in Canada, with 6 matches overall (3 in each tournament).

Gregorius scored a goal against England in a friendly match on June 1, 2019, helping New Zealand win 1–0.

She was part of New Zealand's 2012 and 2016 Olympic teams. She also played in the 2019 FIFA Women's World Cup in France.

On 4 March 2020, Gregorius played her 100th match for New Zealand against Belgium in the 2020 Algarve Cup, when she also announced her retirement from international football.