Janet Mackenzie (born 1962) is a British Anglican priest and former teacher. Since September 2016, she has been the Archdeacon of Hertford in the Diocese of St Albans.

Mackenzie was born in 1962.^[1][2] She studied at Westminster College, Oxford, a teacher training college, and graduated with a Bachelor of Education (BEd) degree in 1986.^[1] She then worked in education.^[3] In 2004, she entered Westcott House, Cambridge, an Anglican theological college in the Liberal Catholic tradition, to train for Holy Orders.^[2] During this time, she also studied theology at Anglia Ruskin University, graduating with a Bachelor of Arts (BA) degree in 2008.^[1]

Mackenzie was ordained in the Church of England as a deacon in 2006 and as a priest in 2007.^[2] From 2006 to 2010, she served her curacy at St Swithun's Church, Sandy in the Diocese of St Albans.^[1][2] In 2010, she joined the Church of St Augustine of Canterbury, Luton as priest-in-charge.^[2][3] She was additionally Area Dean of Luton between 2012 and 2016.^[3] She was made Vicar of St Augustine's in 2014.^[2]

On 6 September 2016, Mackenzie was collated as Archdeacon of Hertford during a service at St Andrew and St George's Church, Stevenage.^[4] On 19 November 2016, she was installed as a Canon of St Albans Cathedral; all archdeacons of the diocese are made canons of the cathedral.^[5]