1997–98 Cleveland Cavaliers season

• Gordon Gund
• George Gund III (lost to Pacers 1–3)
• SportsChannel/Fox Sports Ohio
• WUAB

The 1997–98 Cleveland Cavaliers season was the 28th season for the Cleveland Cavaliers in the National Basketball Association. In the 1997 NBA draft, the Cavaliers selected shooting guard Derek Anderson from the University of Kentucky with the 13th overall pick, selected point guard Brevin Knight out of Stanford University with the 16th overall pick, and selected small forward Cedric Henderson from the University of Memphis with the 45th overall pick.

Lithuanian rookie center Zydrunas Ilgauskas, who was drafted by the Cavaliers with the 20th overall pick in the 1996 NBA draft, but missed all of the previous season due to a foot injury, made his debut in the NBA this season. During the off-season, the team acquired All-Star forward Shawn Kemp from the Seattle SuperSonics in a three-team trade, acquired Wesley Person from the Phoenix Suns in another three-team trade, and signed free agent Mitchell Butler.

The Cavaliers struggled with a 4–6 start to the regular season, as Bob Sura went down with an ankle injury and only played just 46 games, and Butler was out for the remainder of the season with a neck injury after 18 games. However, the team posted a ten-game winning streak between November and December, and later on held a 27–20 record at the All-Star break. The Cavaliers played above .500 in winning percentage for the remainder of the season, finishing in fifth place in the Central Division with a 47–35 record, earning the sixth seed in the Eastern Conference, and qualifying for the NBA playoffs after a one-year absence. The Cavaliers had the best team defensive rating in the NBA.

Kemp averaged 18.0 points, 9.3 rebounds and 1.4 steals per game, while Person averaged 14.7 points and 1.6 steals per game, and also led the league with 192 three-point field goals, and Ilgauskas provided the team with 13.9 points, 8.8 rebounds and 1.6 blocks per game. In addition, Knight contributed 9.0 points, 8.2 assists, and led the league with 196 total steals, averaging 2.5 steals per game, while Anderson provided with 11.7 points and 1.3 steals per game off the bench, playing 66 games due to a knee injury, and Henderson contributed 10.1 points and 4.0 rebounds per game. Also off the bench, second-year center Vitaly Potapenko averaged 7.1 points and 3.9 rebounds per game, while Sura provided with 5.8 points and 3.7 assists per game, and Ferry contributed 4.2 points per game.

During the NBA All-Star weekend at Madison Square Garden in New York City, New York, Kemp was selected for the 1998 NBA All-Star Game, as a member of the Eastern Conference All-Star team; it was his sixth and final All-Star appearance. Meanwhile, Ilgauskas, Knight, Henderson and Anderson were all selected for the NBA Rookie Game, as members of the Eastern Conference Rookie team, although Anderson did not participate due to injury; Ilgauskas scored 18 points along with 7 rebounds and 2 blocks, and was named the Rookie Game's Most Valuable Player, as the Eastern Conference defeated the Western Conference, 85–80. In addition, Person participated in the inaugural NBA 2Ball Competition, along with Michelle Edwards of the WNBA's Cleveland Rockers.

Ilgauskas and Knight were both named to the NBA All-Rookie First Team, while Anderson and Henderson were both selected the NBA All-Rookie Second Team; Knight also finished tied in eleventh place in Defensive Player of the Year voting, while head coach Mike Fratello finished in third place in Coach of the Year voting.

In the Eastern Conference First Round of the 1998 NBA playoffs, the Cavaliers faced off against the 3rd–seeded Indiana Pacers, a team that featured All-Star guard Reggie Miller, All-Star center Rik Smits, and Chris Mullin. The Cavaliers lost the first two games on the road at the Market Square Arena, but managed to win Game 3 over the Pacers at home, 86–77 at the Gund Arena. However, the Cavaliers then lost Game 4 to the Pacers at home, 80–74, as the team lost the series in four games; this would be their final NBA playoff appearance until the 2005–06 season.

The Cavaliers finished 14th in the NBA in home-game attendance, with an attendance of 694,629 at the Gund Arena during the regular season. For the season, the team slightly redesigned their uniforms, which would remain in use until 1999. Until 2023, this was the last time the Cavaliers made the playoffs without future All-Star LeBron James, who was selected by the team as the first overall pick in the 2003 NBA draft.