| ATP RANK | NAME | Nationality | RACKET BRAND | RACKET TYPE | DRESS | SHOES |
| 1 | Nadal Rafael | Spain | Babolat | Play AeroPro Drive | Nike | Nike |
| 2 | Federer Roger | Switzerland | Wilson | Pro Staff RF97 Autograph | Nike | Nike |
| 3 | Zverev Alexander | Germany | Head | YouTek Graphene Instinct MP | ||
| 4 | Dimitrov Grigor | Bulgaria | Wilson | Pro Staff95 | Nike | Nike |
| 5 | Cilic Marin | Croatia | Head | Graphene Prestige Rev Pro | Li-Ning | Li-Ning |
| 6 | DelPotro Juan Martin | Argentina | Wilson | |||
| 7 | Thiem Dominic | Austria | Babolat | Pure Strike | Adidas | Adidas |
| 8 | Anderson Kevin | South Africa | Dunlop/Srixon | Revo X2.0 Tour | Lotto | Lotto |
| 9 | Isner John | USA | Prince | Warrior 100 | Lacoste | Nike |
| 10 | Goffin David | Belgium | Wilson | Blade 98 | Lacoste | Nike |
| 11 | Carreno Busta Pablo | Spain | Wilson | Blade 98 | Joma | Joma |
| 12 | Djokovic Novak | Serbia | Head | Graphene XT Speed Pro | Lacoste | Asics |
| 13 | Querrey Sam | USA | Babolat | AeroPro Drive Plus | Fila | |
| 14 | Bautista Agut Roberto | Spain | Wilson | Six One 95 | ||
| 15 | Sock Jack | USA | Babolat | AeroPro Drive | ||
| 16 | Schwartzman Diego | Argentina | Head | |||
| 17 | Berdych Tomas | Czech Republic | Head | Graphene XT Instinct MP | Adidas | Adidas |
| 18 | Pouille Lucas | France | Prince | Tour95 | ||
| 19 | Fognini Fabio | Italy | Babolat | Pure Drive Plus | ||
| 20 | Nishikori Kei | Japan | Wilson | Burn 100 | Uniqlo | Adidas |
| 21 | Chung Hyeon | South Korea | Yonex | Bimimetic M3.0 | ||
| 22 | Edmund Kyle | Great Britain | Wilson | Nike | ||
| 23 | Kyrgios Nick | Australia | Yonex | EZONE DR98 | Nike | Nike |
| 24 | Raonic Milos | Canada | Wilson | Blade 98 | New Balance | New Balance |
| 25 | Wavrinka Stan | Switzerland | Yonex | VCORE Tour G 330 | Yonex | Yonex |
| 26 | Krajinovic Filip | Serbia | Wilson | |||
| 27 | Mannarino Adrian | France | Babolat | AeroPro Drive | ||
| 28 | Kohlschreiber Philipp | Germany | Wilson | Pro Staff 97 | Asics | Asics |
| 29 | Gasquet Richard | France | Head | Graphene XT Extreme Pro | Le Coq Sportif | Asics |
| 30 | Lopez Feliciano | Spain | Wilson | Juice 100 | Nike | Nike |
| 31 | Rublev Andrey | Russia | Wilson | |||
| 32 | Dzumhur Damir | Bosnia | WIlson | |||
| 33 | Muller Giles | Luxemburg | Wilson | Sergio Tacchini | ||
| 34 | Ferrer David | Spain | Babolat | Lotto | Lotto | |
| 35 | Coric Borna | Croatia | WIlson | |||
| 36 | Tsonga Jo-Wilfried | France | Babolat | AeroPro Drive Plus | Adidas | Adidas |
| 37 | Verdasco Fernando | Spain | Head | Graphene XT Speed Pro | Adidas | Adidas |
| 38 | Khachanov Karen | Russia | Head | |||
| 39 | Murray Andy | Great Britain | Head | Graphene Radical Pro | Under Armour | Under Armour |
| 40 | Tsitsipas Stefanos | Greece | WIlson | |||
| 41 | Monfils Gael | France | Wilson | Blade98 | Asics | Asics |
| 42 | Ramos-Vinolas Albert | Spain | Babolat | Pure Drive Plus | ||
| 43 | Shapovalov Denis | Canada | Yonex | |||
| 44 | Haase Robin | Netherlands | Head | Graphene Prestige MP | ||
| 45 | Mayer Leonardo | Argentina | Wilson | Steam96 | ||
| 46 | Sugita Yuichi | Japan | Babolat | |||
| 47 | Cuevas Pablo | Uruguay | Head | Graphene Prestige MP | Lacoste | Asics |
| 48 | Sousa Joao | Portugal | Wilson | Juice100 BLX | ||
| 49 | Seppi Andreas | Italy | ProKennex | Ki Qtour | ||
| 50 | Paire Benoit | France | Babolat | AeroPro Drive | ||
| 51 | Medvedev Daniil | Russia | Tecnifibre | |||
| 52 | Gojowczyk Peter | Germany | Head | |||
| 53 | Donaldson Jared | USA | Head | |||
| 54 | Zverev Mischa | Germany | Head | |||
| 55 | Johnson Steve | USA | Yonex | |||
| 56 | Tiafoe Frances | USA | Yonex | |||
| 57 | Dolgopolov Alexandr | Ukraine | Wilson | Pro Staff 95S | Joma | |
| 58 | Sandgren Tennys | USA | WIlson | |||
| 59 | Harrison Ryan | USA | Babolat | Pure Aero | Babolat Jet Mach | |
| 60 | Benneteau Julien | France | Babolat | |||
| 61 | Fucsovics Marton | Hungary | Yonex | |||
| 62 | Jaziri Malek | Tunisia | Prince | |||
| 63 | Jarry Nicolas | Chile | WIlson | |||
| 64 | Cecchinato Marco | Italy | Babolat | |||
| 65 | Struff Jan-Lennard | Germany | Babolat | |||
| 66 | Bedene Aljaz | Great Britain | Tecnifibre | Tfight 315 | ||
| 67 | Marterer Maximillian | Germany | Babolat | |||
| 68 | Fritz Taylor Harry | USA | Head | |||
| 69 | Garcia-Lopez Guillermo | Spain | Head | YouTek IG Prestige Pro | ||
| 70 | Millman John | Australia | Tecnifibre | T-Fight320 | ||
| 71 | Simon Gilles | France | Head | YouTek IG Prestige MP | Adidas | Adidas |
| 72 | Lorenzi Paolo | Italy | Head | |||
| 73 | Carballes Baena Roberto | Spain | WIlson | |||
| 74 | Chardy Jeremy | France | Tecnifibre | |||
| 75 | Mayer Florian | Germany | Head | Graphene Prestige MidPlus | Adidas | Adidas |
| 76 | Herbert Pierre-Hugues | France | Yonex | |||
| 77 | Basilashvili Nikoloz | Georgia | Head | |||
| 78 | Delbonis Federico | Argentina | Babolat | |||
| 79 | Pella Guido | Argentina | Wilson | Blade 98 | ||
| 80 | Vesely Jiri | Czech Republic | Dunlop/Srixon | |||
| 81 | Baghdatis Marcos | Cyprus | Pacific | BX2 Fast Pro 100 | Adidas | Adidas |
| 82 | Daniel Taro | Japan | Babolat | |||
| 83 | Ebden Matthew | Australia | Head | |||
| 84 | Karlovic Ivo | Croatia | Head | Graphene Radical Pro | ||
| 85 | Basic Mirza | Bosnia | WIlson | |||
| 86 | Bhambri Yuki | India | Babolat | |||
| 87 | Troicki Viktor | Serbia | Babolat | AeroPro Drive Plus | ||
| 88 | Pospisil Vasek | Canada | Wilson | Burn100 | ||
| 89 | Thompson Jordan | Australia | Babolat | |||
| 90 | Donskoy Evgeny | Russia | Babolat | |||
| 91 | Istomin Denis | Uzbekistan | Tecnifibre | Tfight 325 | ||
| 92 | Copil Marius | Romania | Tecnifibre | |||
| 93 | Berankis Ricardas | Lithuania | Yonex | VCORE Xi98 | ||
| 94 | Kicker Nicolas | Argentina | Head | |||
| 95 | Lajovic Dusan | Serbia | Wilson | |||
| 96 | Kukushkin Mikhail | Kazachstan | Head | Graphene Speed MP | Sergio Tacchini | |
| 97 | Sela Dudi | Israel | Head | |||
| 98 | Albot Radu | Romania | Yonex | |||
| 99 | Lacko Lukas | Slovakia | Wilson | |||
| 100 | Zeballos Horacio | Argentina | Head |
ATP rankings as of 07.05.2018