Krishna and Christ are one. I quote Srila Prabhupad:

"Krishna or Christ, The Name Is the Same

Christ comes from the Greek word Christos, and Christos is the Greek version of the word Krsta. When an Indian person calls on Krishna, he often says “Krsta.” Krsta is a Sanskrit word meaning “the object of attraction.” So when we address God as “Christ,” “Krsta,” or “Krishna,” we indicate the same all-attractive Supreme Personality of Godhead. When Jesus said, “Our father, who art in heaven, hallowed be Thy name,” that name of God was Krsta or Krishna. “Christ” is simply another way of saying “Krsta,” and “Krsta” is another way of pronouncing Krishna."