The thrilling comeback came as Anda had powered to a 5-1 lead in the earlier session.
After bringing the match back to 5-3, Judd again found himself falling behind at 7-3 - which propelled the Englishman into a stunning run of six frames to win the entertaining final 9-7.
It was Anda's first-ever ranking final appearance although the 31-year-old had eliminated Ronnie O'Sullivan en route to the final.
For Trump however, it is his second English Open trophy as well as the 24th ranking event win of his career, and his first ranking event title for 19 months.
Trump admitted that when Anda was dominating the table he was thinking about his runner-up speech.
"He played so well, at 7-3 I was in a bit of a resignation," he told Eurosport.
"I kind of not gave up, but I was happy he was winning it than me throwing it away.
"I have no idea how I turned it around. At the end of one or two frames I was trying to play an extra shot just to figure out the throw of the white and in the end I managed to find my rhythm."
The 2020 champion Trump - who gets to take home £80,000 in prize money - becomes only the second multiple-time winner of the tournament, and added that this time it meant even more than before.
"I am buzzing," Trump added.
"Two or three years ago it would not have meant that much, but having a mini-drought and not winning as often, it is a nicer feeling.
"The longer you have to wait, the more you appreciate it. I have not been blowing everyone away like maybe I was two or three years ago."
