18 Anonymous In: Question-Answer What President first declared Thanksgiving a national holiday in the U.S.? 18 What President first declared Thanksgiving a national holiday in the U.S.? 1 Answer Voted Oldest Recent Random Best Answer Goto 2021-07-23T19:01:20+00:00Added an answer on July 23, 2021 at 7:01 pm The correct answer is Abraham Lincoln. 5 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.