| Organisateur | Pays | Salons enregistrés |
| S.C.S. Sogecos & Cie | Monaco | 1 |
| SACO (Safahan Ara Exhibition Consultants Co.) | Iran | 5 |
| SAE (Society of Automotive Engineers) | USA - Etats-Unis d'Amérique | 1 |
| Saem Sogepea | France | 2 |
| Safex (Société algérienne des foires et exportations) | Algérie | 7 |
| SAFI | France | 8 |
| Safim | France | 1 |
| SAIF (Institute of Fundraising Southern Africa) | Afrique du Sud | 1 |
| Saker Expo | Libye | 4 |
| Salon Bois | Suisse | 1 |
| Salon des antiquaires du Pays d'Aix | France | 1 |
| Salon des Métiers d'Art du Québec | Canada | 1 |
| Salon du Cheval de Montpellier | France | 1 |
| Salon du Livre de Montréal | Canada | 1 |
| sana srl | Italie | 1 |
| Satcar | France | 1 |
| Saturne Organisation | France | 2 |
| SavoiExpo | France | 4 |
| Savour Wine & Food Festival | Canada | 1 |
| SBAC (The Society of British Aerospace Companies Ltd.) | Royaume Uni | 1 |
| SBE (Salmon Bay Events) | USA - Etats-Unis d'Amérique | 2 |
| SBL Exhibitions Ltd. | Israël | 2 |
| SCTE (Society of Cable Telecommunications Engineers) | USA - Etats-Unis d'Amérique | 1 |
| SDL Exhibitions | Irlande | 6 |
| Sécession | France | 4 |
| Sedim | France | 1 |
| Segepex (Société de Gestion du Parc des Expositions du Pays de Lorient) | France | 1 |
| SEIA (Solar Energy Industries Association) | USA - Etats-Unis d'Amérique | 1 |
| SEMA (Société d'encouragement aux Métiers d'Art) | France | 1 |
| Semi North America | USA - Etats-Unis d'Amérique | 11 |
| Semovim | France | 1 |
| Senaf | Italie | 19 |
| Sencomane | Sénégal | 4 |
| Sentez International Co. | Turquie | 1 |
| SeoulMesse ID Inc. | Corée du Sud | 11 |
| SEPA (Solar Electric Power Association) | USA - Etats-Unis d'Amérique | 1 |
| SepelCom | France | 17 |
| Sepic Expositions | France | 1 |
| Service Availability Forum | USA - Etats-Unis d'Amérique | 1 |
| Services International | Inde | 9 |
| Servicios Forestales y de Exposiciones | Chili | 1 |
| SFIC (Singapore Furniture Industries Council) | Singapour | 1 |
| Sforman S.A. | France | 1 |
| SFSC (Société française de sexologie clinique) | France | 1 |
| SFV (Société Française du Vide) | France | 3 |
| Shanghai Besway Exhibition Company Limited | Chine | 2 |
| Shanghai Gehua Exhibition Service Co.,Ltd. | Chine | 10 |
| Shanghai Huayu Exhibition Services Co., Ltd. | Chine | 1 |
| Shanghai Shenshi Convention & Exhibition Service Co., Ltd. | Chine | 1 |
| Shanxi Zhenwei Exhibition Co., Ltd | Chine | 1 |
| Shenyang Renaissance International Exhibitions Co., Ltd. | Chine | 1 |
| Shephard Group | Royaume Uni | 11 |
| SHM Communication | Algérie | 1 |
| Shunde Expo | Chine | 1 |
| SIA (SnowSports Industries America) | USA - Etats-Unis d'Amérique | 1 |
| SIAL | France | 4 |
| Sial Montréal | Canada | 1 |
| SIAO (Salon international de l'artisanat de Ouagadougou) | Burkina Faso | 1 |
| Siberian Fair | Russie | 41 |
| Sibico International Ltd. | Russie | 3 |
| SICMO (Shanghai International Conference Management Orgnization) | Chine | 1 |
| SICVERL (Syndicat des Constructeurs de Véhicules et Résidences de Loisirs) | France | 1 |
| SID, Inc. (Society for Information Display) | USA - Etats-Unis d'Amérique | 2 |
| SIE Secretariat | Malaisie | 1 |
| Siec (Shanghai International Exhibition Service Co., Ltd) | Chine | 7 |
| Sign Association of Canada | Canada | 2 |
| SIMA (Syrian International Marketing Association) | Syrie | 4 |
| Simmons Gallery | Royaume Uni | 1 |
| Singapore Exhibition Services Pte Ltd | Singapour | 37 |
| Singex Exhibitions Pte Ltd | Singapour | 2 |
| Sipec | France | 1 |
| SIRA Algérie | Algérie | 4 |
| SJAC (Society of Japanese Aerospace Companies) | Japon | 1 |
| Skopje Fair | Macédoine | 12 |
| SLAM (syndicat national de la librairie ancienne et moderne) | France | 1 |
| SLV (Schweizerischer Landmaschinen-Verband) | Suisse | 1 |
| Smac | France | 1 |
| SME (Society of Manufacturing Engineers) | USA - Etats-Unis d'Amérique | 9 |
| SMIE (Shanghai Modern International Exhibition Co. Ltd) | Chine | 4 |
| SMMT (Society of Motor Manufacturers and Traders) | Royaume Uni | 3 |
| SMOP (Organização de Feiras de Moda) | Portugal | 1 |
| SNIA Europe (Storage Networking Industry Association) | Royaume Uni | 1 |
| SOC (Société d’Organisation Culturelle) | France | 1 |
| Soccerex | Royaume Uni | 1 |
| Soccerex Dubai | EAU - Emirats Arabes Unis | 1 |
| Societatea Romana de Radiodifuziune | Roumanie | 2 |
| Société Française de Radiologie | France | 1 |
| Sodes | France | 6 |
| Sofex (Société des Foires Expositions de Strasbourg) | France | 1 |
| Sogecos Spa | Italie | 4 |
| Sogefoires International | Tunisie | 14 |
| SolarPACES (Solar Power and Chemical Energy Systems) | France | 1 |
| Sollentuna Expo Center | Suède | 2 |
| Sologne Nature Environnement | France | 1 |
| Sommet de l'élevage | France | 1 |
| Source (Centre national de ressources du tourisme et du patrimoine rural) | France | 1 |
| Sovencon LLC | Russie | 2 |
| Soysal | Turquie | 1 |
| Space | France | 1 |
| Spas Organisation | France | 6 |
| Spat SA | France | 6 |
| Spatex Ltd. | Royaume Uni | 1 |
| Spazio Progress | Italie | 1 |
| SPE (Society of Petroleum Engineers) | USA - Etats-Unis d'Amérique | 3 |
| Spearhead Exhibitions Ltd. | Royaume Uni | 7 |
| Specialised Exhibitions | Afrique du Sud | 14 |
| SPI (The Society of the Plastics Industry, Inc.) | USA - Etats-Unis d'Amérique | 1 |
| Spie (International Society for Optical Engineering) | USA - Etats-Unis d'Amérique | 26 |
| Spie Europe | Royaume Uni | 5 |
| Spielwarenmesse eG | Allemagne | 2 |
| Spintelligent (Pty) Ltd | Afrique du Sud | 10 |
| Sport Expo Ltd. | Ukraine | 2 |
| Sportys | France | 1 |
| Squad International | France | 2 |
| SSNAME (Shanghai Society of Naval Architects & Marine Engineers) | Chine | 1 |
| St. Petersburg Express | Russie | 3 |
| Standing | France | 3 |
| Steenhaus Events | Luxembourg | 1 |
| Step Exhibitions Ltd. | Royaume Uni | 4 |
| Stier Group Ltd. | Israël | 16 |
| Stocexpo Ltd. | Royaume Uni | 5 |
| Stockholm International Fairs | Suède | 1 |
| Strategic Marketing and Exhibitions | EAU - Emirats Arabes Unis | 2 |
| Streamline Marketing | EAU - Emirats Arabes Unis | 4 |
| Strechy Praha s.r.o. | Rép. Tchèque | 1 |
| Studio Lobo Srl | Italie | 6 |
| Stylepark AG | Allemagne | 1 |
| Summit Trade Events Ltd | Royaume Uni | 3 |
| Sunry Advertising and Exhibition Co., Ltd. | Chine | 1 |
| Suomen Messut | Finlande | 36 |
| Supreme Council for Research | Egypte | 1 |
| Survey Marketing + Consulting GmbH | Allemagne | 7 |
| Suzhou Guohua Exhibition Co.,Ltd | Chine | 1 |
| Suzhou International Expo. Center Co. Ltd | Chine | 5 |
| Svenska Mässan | Suède | 20 |
| Svet Knihy | Rép. Tchèque | 1 |
| Syfac | France | 1 |
| Symbiose-Communication-Environnement | Algérie | 1 |
| Symop (Syndicat des entreprises de technologies de production) | France | 3 |
| Symposium international de l'eau | France | 1 |
| Syndicat des biologistes | France | 1 |
| Synergy | Pays-Bas | 11 |
| SZWA (Shenzhen Watch Clock Association) | Chine | 1 |
