Tessa Noël is a fictional character in the television series Highlander: The Series, portrayed by Belgian actor Alexandra Vandernoot. A professional artist and sculptor, Tessa is the lover and confidant of the series protagonist Duncan MacLeod, played by Adrian Paul, an immortal swordsman born centuries before in the Scottish Highlands. In the pilot episode "The Gathering," Tessa is said to have been in a relationship with Duncan for twelve years already and the two co-own MacLeod and Noël Antiques in the fictional city Seacouver, Washington. Alongside Duncan, she is a mentor and friend to young Richie Ryan.

Highlander: The Series ran for six season from 1992-1998. A series regular, Vandernoot appeared in all season 1 episodes and the first four episodes of season 2. She then left the show in order to have more time for her family and other projects, not wishing to continue working with the show's heavy production schedule and obligations. She returned for guest appearances in the season two finale "Counterfeit" and the two-part series finale episodes "To Be" and "Not to Be" in 1998.

The character of Tessa was popular with fans who praised her character's outspoken personality and her relationship with Duncan MacLeod. Her departure was criticized and protested by several. The series producers have noted in different interviews that the show became more cynical following Tessa's departure.