Tim Kirk is both a professional artist and an American fan artist. He worked as a senior designer at Tokyo DisneySea, as an Imagineer for Walt Disney, and during the mid-1970s, he was an illustrator at Kansas City's Hallmark Cards. He earned his Bachelor’s Degree in Fine Arts with an emphasis in Commercial Art, and his Master’s Degree in Illustration from California State University, Long Beach. His thesis project consisted of a series of paintings for "The Lord of the Rings" by J.R.R. Tolkien; 13 of these were published by Ballantine Books as the 1975 Tolkien Calendar. Today, Kirk runs Kirk Design, Inc., a design firm in the Los Angeles, California area. He also sits on the advisory board of Seattle's Science Fiction Museum and Hall of Fame.
Kirk won the Hugo Award for Best Fan Artist in 1970, 1972, 1973, 1974, and in 1976. With Ken Keller, he co-designed the first cold-cast resin base used for a Hugo, given in 1976 by the World Science Fiction Society at Kansas City's 34th World Science Fiction Convention; he has been additionally nominated other times for the award.