ATP Miami 03/26 15:00 25 [54] Steve Johnson v Pablo Carreno-Busta [19] 4-6,4-6
ATP Miami 03/24 22:20 24 [22] Adrian Mannarino v Steve Johnson [54] 3-6,3-6
ATP Miami 03/22 20:00 23 Steve Johnson v Victor Estrella Burgos 6-3,6-3
Challenger Irving 03/17 20:05 28 Steve Johnson v Mikhail Kukushkin 4-6,6-7
Challenger Irving 03/16 22:00 27 Alex De Minaur v Steve Johnson 2-6,2-6
Challenger Irving 03/15 18:00 26 Lukas Lacko v Steve Johnson 0-6,2-6
Challenger Irving 03/14 21:20 25 Sergiy Stakhovsky v Steve Johnson 7-5,6-7,4-6
ATP Indian Wells 03/08 23:05 23 Steve Johnson v Daniil Medvedev 6-7,4-6
ATP Acapulco 02/28 03:30 25 Steve Johnson v Alexander Zverev Cancelled
ATP Delray Beach 02/24 20:00 28 Peter Gojowczyk v Steve Johnson 7-6,6-3
ATP Delray Beach 02/23 17:30 27 Evgeny Donskoy v Steve Johnson 1-6,4-6
ATP Delray Beach 02/21 20:25 26 Steve Johnson v Milos Raonic 6-2,6-4
ATP Delray Beach 02/20 17:50 25 Steve Johnson v Nikoloz Basilashvili 6-3,6-4
ATP New York 02/13 18:00 25 Steve Johnson v Adrian Menendez-Maceiras 6-1,3-6,6-7
Davis Cup 02/04 12:55 26 Pedja Krstin v Steve Johnson 6-1,7-5
Australian Open 01/16 03:15 23 Steve Johnson v Denis Kudla 7-6,3-6,6-7,2-6
ATP Auckland 01/09 23:30 26 Steve Johnson v Roberto Bautista-Agut 6-2,2-6,1-6
ATP Auckland 01/09 01:05 25 Steve Johnson v Liam Caruana 7-5,7-6
ATP Auckland 01/09 00:50 25 Steve Johnson v Ryan Harrison Cancelled
ATP Brisbane 12/31 08:05 25 Steve Johnson v Alex De Minaur 6-7,4-6
ATP Paris 10/30 10:00 24 [42] Steve Johnson v Robin Haase [43] 2-6,1-6
ATP Basel 10/24 11:00 25 [40] Benoit Paire v Steve Johnson [43] 6-3,7-6
ATP Shanghai 10/12 08:05 26 [5] Marin Cilic v Steve Johnson [45] 7-6,6-4
ATP Shanghai 10/11 12:15 25 [233] Di Wu v Steve Johnson [45] 2-6,1-6
ATP Shanghai 10/10 08:00 24 [45] Steve Johnson v Nick Kyrgios [21] Retired
ATP Tokyo 10/06 03:00 27 [29] Diego Schwartzman v Steve Johnson [46] 6-0,7-5
ATP Tokyo 10/05 03:00 26 Alexandr Dolgopolov v Steve Johnson 2-6,4-6
ATP Tokyo 10/03 10:00 25 [46] Steve Johnson v Dominic Thiem [7] 4-6,7-6,6-4
US Open 08/30 23:20 24 [46] Steve Johnson v Kyle Edmund [42] 5-7,2-6,6-7
US Open 08/28 15:00 23 [92] Nicolas Almagro v Steve Johnson [46] 4-6,6-7,6-7

Steve Johnson Jr. (born December 24, 1989) is an American former professional tennis player.

He had a career-high singles ranking of world No. 21 achieved on July 25, 2016, and a doubles ranking of world No. 39 achieved on May 23, 2016. For one week in August 2016, Johnson was the top-ranked American in men's singles. He won four ATP Tour and nine ATP Challenger Tour titles, one at Nottingham on grass, twice at Houston on clay, and one at Newport on grass. He won a bronze medal in men's doubles at the 2016 Olympics with fellow American Jack Sock.

Johnson played college tennis for the USC Trojans. He won the NCAA Men's Singles Championship in his junior and senior seasons (2011–2012), and he was a part of a Trojan team that won four consecutive NCAA Championships.