- TAV Engineering Ltd
- TAYLOR MACHINE WORKS, Inc.
- TC Tomasz Wojdala
- TDI Tech Development
- TEAMTEC A/S
- Tech Oil Products, Inc.
- TECHCROSS Inc
- TECHFLOW MARINE Ltd.
- TECHMARINE S/W CO., LTD.
- Technava SA
- Techni S.A.
- Technical Service
- TechnoFibre Singapore Pte
- Technomarine Engg Works & Services
- Tecnomagnete S.p.A.
- TECO MARITIME ASA
- Tecomart Pte Ltd.
- Teekay Couplings Ltd.
- Teho Ropes & Supplies Pte Ltd
- Teignbridge Propellers International Ltd
- Teknoware OY
- Teldor Cables & Systems Ltd
- Telenav-Marine Pte Ltd
- TEMARO The Dutch Marine Suppliers
- TENMAT Ltd.
- TERASAKI ELECTRIC CO.,(FAR EAST)PTE.LTD.
- Terasaki Electric Europe Ltd
- TERASAKI ELECTRIC LTD.
- TERATEC LTD.
- Testo AG
- THANNER AND Co.
- THB Verhoef bv
- Theriault International Marine
- Theunissen Technical Trading BV
- THR Marine
- THRANE & THRANE A/S
- Thrustmaster Asia Pacific Pte Ltd. (TMAP)
- Thrustmaster Europe B.V. (TMEUR)
- Thyboron Skibssmedie
- TIANJIN MACHINERY & ELECTRIC EQUIPMENT LMP & EXPO
- Tianjin Pumps & Machinery Group
- Tianjin Tanggu Tianshun Valve Co. Ltd
- Tianjin TengLinYinHe valve Co., Ltd
- Tideland Signal Ltd
- Tides Marine International Limited
- Timberland Equipment Ltd
- Tiryns Investment & Holding Co., Ltd.
- TMS ENDUSTRIYEL SOGUTMA VE ISLEM TEKNOLOJILERI LTD. STI.
- Tokyo Keiso Co., Ltd.
- Tongfeng Industry Co.,Ltd
- Tonghai Marine Co., Ltd.
- Tongxiang Xiaoying Pollution Control Technology Co., Ltd
- Tools & Pumps Trading Centre BV
- torbo Engineering Keizers GmbH
- Torginol Teollisuuslattiat Oy
- Torque Marine IPS Innovative Propulsion Systeme GmbH & Co. KG
- Total Filtration Ltd
- Totem Plus Ltd.
- TOWIMOR SA
- Toyo Marine & Industrial (S) PTE LTD
- TQ Enviromental Plc
- TQC GmbH
- TRAFA BV
- TRAFAG AG
- Trafotek OY
- TRANS PACIFIC HYDRAULICS PTE LTD
- Transas Marine Pacific Pte Ltd.
- TRANSAS SCANDINAVIA AB
- Transfluid Srl
- TransWorld Equipment Corp
- Tranter India Pvt. Ltd, Pune
- TRANTER INTERNATIONAL AB
- TRANZAS EVRAZIJA
- TREADE AS
- Trelleborg Marine Systems Asia Pte Ltd
- Trelleborg Viking AS
- Tricab
- TriCab (USA) Inc
- Trimat Ltd
- Tritex NDT Ltd
- TS Steel Company,Ltd.
- TTS Bohai Machinery Co., Ltd.
- TTS Handling Systems AS
- TTS Marine ASA
- TTS Marine s.r.l.
- TTS Syncrolift AS Shipyard Solutions
- Tubes International Sp. z o.o.
- Tufnol Composites Ltd
- TUNA Ship Supply Ltd. Co.
- TURBOMED SA
- Turbotechniki Ltd
- TUYO MARINE TOOL CO.LTD
- Twin Disc International SA
- TWINCO Pte Ltd
- Tyne Gangway (Structures) Ltd
- Tysons Ships Riggers
- Uber Engineering Pte Ltd
- ULJANIK TESU SZZ, d.o.o.
- ULTRA FOG AB
- Umbilicals International