Ted Nasmith (born 1956) is a Canadian artist, illustrator and architectural renderer. He is best known as an illustrator of J. R. R. Tolkien's works The Hobbit, The Lord of the Rings and The Silmarillion. Tolkien praised and commented on his early work, something that encouraged him in his career.

Nasmith was born in Goderich, Ontario, Canada. As the son of a Royal Canadian Air Force officer, Nasmith's childhood was characterized by a series of moves, chiefly when his father was stationed in eastern France when Ted was 2 years old, until the family returned to Ontario 3 years later. By the time Nasmith became a teenager, they had settled in Toronto.

Nasmith's public school guidance counselor encouraged him to enter a high school which featured a 4-year commercial art program. During his third year of high school, however, Nasmith's sister introduced him to The Lord of the Rings, and it quickly became a huge inspiration and focus in his life. Nasmith writes:

It opened up in me a dormant love of lost and misty times, myth and legend. Not since childhood had I felt such a sense of 'home', unaware of the effects the intervening years had had in displacing it. I began immediately to draw scenes inspired by this magical, nostalgic realm, becoming absorbed for many hours at a time. (Nasmith, 2002)

In 1972, Nasmith mailed photographs of some of his paintings to J. R. R. Tolkien, including his gouache of The Unexpected Party. Tolkien responded by letter a few weeks later, both praising the work and making the comment that the rendition of Bilbo Baggins seemed a little too childlike. Still a teenager at the time, this early feedback from Tolkien encouraged Nasmith to strive for a more literal interpretation of Tolkien's works.

After graduation, Nasmith aspired to follow in the footsteps of automotive illustrator Art Fitzpatrick. However, since photography was replacing illustration in the business of car advertising, he instead found employment as an architectural renderer, showing a particular flair for the intense realism such illustrations often demand.

Nasmith's Tolkien artwork, which echoes the luminist landscapes and Victorian neoclassical styles, eventually caught the attention of Tolkien's publishers, who included four of his paintings in the 1987 Tolkien Calendar. His artwork has appeared in many of these calendars, including several where he is the sole featured artist (1987, 1988, 1990, 1992, 1996, 2000, 2002, 2003, 2004, 2009, 2010).

In October 1996, Nasmith was asked by Tolkien's publishers to provide the artwork for the first illustrated edition of The Silmarillion, during which time Ted developed a strong working relationship with Christopher Tolkien. The illustrated edition was published in 1998; in 2004, a second edition was published featuring many more paintings by Nasmith.