Mariana D'Andrea (born 12 February 1998) is a Brazilian Paralympic powerlifter. She won the gold medal in the women's 73 kg event at the 2020 Summer Paralympics held in Tokyo, Japan. She is the first competitor representing Brazil to win a gold medal in powerlifting at the Paralympics. A few months later, she won the silver medal in her event at the 2021 World Para Powerlifting Championships held in Tbilisi, Georgia.