Andrea Maricica Tivadar (born 18 March 1989) is a British-Romanian actress, model, and singer.

Tivadar was born on 18 March 1989 in Satu Mare, Romania, and later grew up in England. Her first stage experience came at the age of three when she began singing in church. At seven, she took up fencing. She was also exposed to theater and dance from an early age. Tivadar earned a degree from Queen Mary University of London's (QMUL) School of Engineering and Material Science. Around 2012-2013, she moved to Barcelona to pursue a master's degree in Biomedical Engineering at the University of Barcelona but later discontinued the program to focus on a career in singing and acting. She credits the city and its people for inspiring her artistic pursuits. Tivadar identifies as Romanian-British. She is fluent in English, Romanian, Spanish and French.

Tivadar made her film debut in 2013, portraying Pam in the Spanish film Las aventuras de Jesús María Cristóbal Pequeño, directed by Gilles Gambino. The following year, she appeared in Gambino's Apokalipstik: Working Title (English title: Another Excellent Day). In December 2014, she appeared in Kendji Girac's debut music video, "Elle má aime". In March 2015, she was invited to sing alongside Poncho, an Argentinian band, at a music festival in Barcelona.

She worked as a model in the advertising industry, collaborating with brands such as Kipling, Palacio del Hierro, El Corte Inglés, and Louis Vuitton. Her success in television commercials—including campaigns for Honda, Coca-Cola, Disaronno, Sony, Telekom, and Hershey's—helped elevate her profile. She became the worldwide face of the watch brand Festina, alongside Gerard Butler, a role that significantly enhanced her visibility and opened doors to mainstream film and television opportunities.