Thomas Samuel Grace (16 February 1815 – 30 April 1879) was an English Anglican missionary in New Zealand.

[1][2] Prior to being engaged by the Church Missionary Society (CMS) in 1844, Grace had success in business and was later ordained at St Bee's College.

[4] Te Kooti attended the boarding school at Tūranga during the time Grace was in charge of the mission.

[7] Grace fled from Taupō to Ōpōtiki and was caught up in the Völkner Incident.

He was rescued from captivity two weeks later by a British man-of-war, HMS Eclipse, after an attempt by the Pai Mārire to exchange him for Tauranga chief Hori Tupaea, who was in prison.