Danylo Nechay (, "or Nechaj. Also Danila or Danilo. In cyrillic Нечай, Ничай, Нечаї)" (November 1, 1612 – February 10, 1651) was a Ukrainian Cossack military commander and activist, a leader during the Cossack-Polish War, Colonel of Bratslav in Podolia from 1648–51 and the brother of Ivan Nechay.