The tradition from the earliest days of the church has been that Luke, a companion of the apostle Paul, wrote both Luke and Acts (Colossians 4:14; 2 Timothy 4:11).
Kutoka Luka 1: 1-4 na Matendo 1: 1-3, ni wazi kwamba mwandishi mmoja aliandika Luke na Matendo. Utamaduni kutoka siku za mwanzo wa kanisa imekuwa kwamba Luka, rafiki wa mtume Paulo, aliandika Luka na Matendo (Wakolosai 4:14; 2 Timotheo 4:11).