On November 3, 2017, in his first game as a starter, he notched his first double-double, with 21 points and 13 rebounds, in a 124–112 win over the Brooklyn Nets. On November 17, he recorded another double-double by scoring 30 points, to go with 10 rebounds, in a 122–113 loss to the Phoenix Suns. Kuzma was named the Western Conference Rookie of the Month for games played in October/November. In 20 games, he averaged a team-high 16. 7 points while shooting 50. 4 percent overall and a team-leading 37. 9 percent on three-point field goals. He was the first ever NBA rookie to compile at least 330 points, 120 rebounds, and 30 made three-pointers in his first 20 games. He was also just the sixth non-lottery pick to win the award in the first month of his career. On December 20, he scored a career-high 38 points on 70% shooting in a 122–116 win over Houston, ending the Rockets' 14-game winning streak. In the following game, he had a team-high 27 points in a 113–106 loss versus the Golden State Warriors to become the first Lakers rookie since Jerry West in 1961 to have scored 25 or more points in three straight games. He played in the Rising Stars Challenge during the 2018 NBA All-Star Weekend, and he was named to the NBA All-Rookie First Team at the end of the season.