Challenger Las Vegas 10/18 19:25 27 [86] Steve Johnson v Ernesto Escobedo [247] 4-6,7-6,6-7
Challenger Las Vegas 10/17 19:30 26 [86] Steve Johnson v Michael Redlicki [343] 6-4,6-4
Challenger Las Vegas 10/16 20:30 25 Steve Johnson v JC Aragone Walkover
Challenger Fairfield 10/13 18:00 29 Steve Johnson v Christopher O'Connell 4-6,4-6
Challenger Fairfield 10/12 20:10 28 Steve Johnson v Brandon Nakashima 3-6,6-1,6-2
Challenger Fairfield 10/12 02:00 27 [99] Steve Johnson v Darian King [171] 6-1,6-1
Challenger Fairfield 10/10 23:00 26 [99] Steve Johnson v Evan King [358] 6-3,6-2
Challenger Fairfield 10/09 02:00 25 [99] Steve Johnson v Michael Mmoh [290] 7-6,6-4
ATP Tokyo 09/28 02:00 64 [138] Yasutaka Uchiyama v Steve Johnson [94] 6-3,6-3
ATP Zhuhai 09/24 05:30 25 [94] Steve Johnson v Pablo Andujar [53] 6-2,2-6,1-6
US Open 08/28 02:55 23 [86] Steve Johnson v Nick Kyrgios [30] 3-6,6-7,4-6
ATP Winston-Salem 08/23 23:00 28 [30] Benoit Paire v Steve Johnson [82] 1-6,6-0,6-0
ATP Winston-Salem 08/23 16:40 27 [61] John Millman v Steve Johnson [82] 6-4,6-7,4-6
ATP Winston-Salem 08/21 19:00 26 [54] Casper Ruud v Steve Johnson [82] 2-6,6-7
ATP Winston-Salem 08/20 20:50 25 [82] Steve Johnson v Daniel Evans [58] 6-3,6-1
ATP Winston-Salem 08/19 20:30 24 [82] Steve Johnson v Corentin Moutet [83] 6-3,6-3
Challenger Vancouver 08/14 21:45 25 [200] Tallon Griekspoor v Steve Johnson [79] 6-4,6-4
Challenger Aptos 08/11 21:00 29 [122] Dominik Koepfer v Steve Johnson [93] 4-6,6-7
Challenger Aptos 08/10 21:20 28 [146] Egor Gerasimov v Steve Johnson [93] 2-6,1-6
Challenger Aptos 08/09 20:25 27 [173] Go Soeda v Steve Johnson [93] 3-6,6-7
Challenger Aptos 08/09 01:10 26 [263] Liam Broady v Steve Johnson [93] 5-7,1-6
Challenger Aptos 08/07 20:15 25 [254] Roberto Quiroz v Steve Johnson [93] 1-6,2-6
ATP Los Cabos 07/31 01:55 25 [57] Grigor Dimitrov v Steve Johnson [94] 7-6,4-6,7-6
ATP Newport 07/16 19:20 25 [188] Christopher Eubanks v Steve Johnson [68] 7-6,7-6
Wimbledon 07/06 10:00 25 [7] Kei Nishikori v Steve Johnson [71] 6-4,6-3,6-2
Wimbledon 07/04 10:00 24 [71] Steve Johnson v Alex De Minaur [29] 3-6,7-6,6-3,3-6,6-3
Wimbledon 07/02 10:00 23 [71] Steve Johnson v Albert Ramos-Vinolas [99] 6-4,6-2,6-3
ATP Eastbourne 06/26 10:00 26 [69] Steve Johnson v Hubert Hurkacz [52] 3-6,6-7
ATP Eastbourne 06/24 14:00 25 [69] Steve Johnson v Reilly Opelka [61] 7-6,6-3
ATP Halle 06/20 13:20 26 [76] Steve Johnson v Alexander Zverev [5] 3-6,5-7

Steve Johnson Jr The Third. (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.