Jesus made it clear. He is the way to God the Father, the way to Heaven.
Thomas said to him, “Lord, we don’t know where you are going, so how can we know the way?” Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me. If you really know me, you will know my Father as well. From now on, you do know him and have seen him.” John 14:5-7 (NIV)
Brigham Young, the 2nd President of The Church of Jesus Christ of Latter-day Saints, had other beliefs. Young said that Mormon founder Joseph Smith was the way to God the Father.
” … namely, that no man or woman in this dispensation will ever enter into the celestial kingdom of God without the consent of Joseph Smith. From the day that the Priesthood was taken from the earth to the winding-up scene of all things, every man and woman must have the certificate of Joseph Smith, junior, as a passport to their entrance into the mansion where God and Christ are—I with you and you with me. I cannot go there without his consent. He holds the keys of that kingdom for the last dispensation—the keys to rule in the spirit world; and he rules there triumphantly, for he gained full power and a glorious victory over the power of Satan while he was yet in the flesh, and was a martyr to his religion and to the name of Christ, which gives him a most perfect victory in the spirit world. He reigns there as supreme a being in his sphere, capacity, and calling, as God does in heaven.” Brigham Young, October 9, 1859, Journal of Discourses, Vol 7, Page 289. http://jod.mrm.org/7/282