Amy Jo Johnson is an American and Canadian actress. As an actress, Johnson is known for her roles as Kimberly Hart on Mighty Morphin Power Rangers, Julie Emrick on Felicity and Jules Callaghan on Flashpoint.

Kimberly Ann Hart is a fictional character in the Power Rangers universe. Played by American actress Amy Jo Johnson during the first three seasons of the show, plus on the two feature films of the franchise, Kimberly has the longest tenure of any female ranger in the series' history, and fourth overall. She is best remembered as the first Pink Ranger (pterodactyl) and first Pink Ninja Ranger from the first entry of the franchise Mighty Morphin Power Rangers. Kimberly was the Pink Ranger for nearly three years before she was written off the show as having given up her powers for good to Zordon's new pink ranger Katherine Hillard, to participate at the Pan Global Games in Florida. However, she would briefly return as the Pink Ranger on three occasions. She first returned during the Legendary Battle of Power Rangers Super Megaforce alongside former teammates Zack Taylor, Billy Cranston, Trini Kwan, and Jason Lee Scott. The five of them later fought alongside the Dino Thunder Rangers, Dino Charge Rangers, and the Grid Battleforce Rangers against Goldar Maximus in Power Rangers Beast Morphers. She also returned to fight a robotic version of Rita Repulsa with the other four original rangers and Tommy Oliver in Mighty Morphin Power Rangers: Once & Always. Johnson did not reprise her role for any of these appearances.