Justin Welby took to social media to promote religious unity.
The attack at #FinsburyPark mosque is abhorrent. We stand in solidarity with our Muslim friends and pray for the bereaved and injured.— Justin Welby ن (@JustinWelby) June 19, 2017
He also posted on Facebook: "The freedom to worship without fear is a right we cherish as a nation and was won at great human cost over many years.
"The appalling attack on Muslims in Finsbury Park is an attack on us all and on the culture and values of our country."
Metropolitan Police said one man died after the driver, described as a large white man, targeted people near the Finsbury Park Mosque early on Monday.
Witnesses described hearing the man, who was detained by members of the public at the scene, shout: "I'm going to kill Muslims."
Police have treated the killing as a terrorist attack.
"Violence only begets more violence- it serves only the interests of those who would terrorise others.
"This wanton and cruel act can produce no good and cannot be justified or excused. In exactly the same way as previous recent attacks it is a crime against God and against humanity."