Te Taka Adrian Gregory Keegan is a New Zealand academic and Māori language revivalist.

[1] With a background in hardware engineering, Keegan returned to the University of Waikato to pursue a Master's degree in Traditional Māori Navigation.

[2][3] He then became involved in the computer science department and became the first to teach computer science in immersion te reo Māori[4] He completed his PhD titled Indigenous Language Usage in a Digital Library: He Hautoa Kia Ora Tonu Ai based on work with the New Zealand Digital Library, a research project led by Ian H.

[7] Keegan led the team that translated Microsoft Windows XP and Microsoft Office 2003 into te reo Māori[8][9] and consulted with the team that translated Office 2013 and Windows 8.

[15] In 2017, New Zealand Prime Minister Bill English presented Keegan with the nation's highest teaching award,[16] the Prime Minister's Supreme Award, in recognition of Keegan's sustained commitment to teaching and learning.