During past 40 years, Tehran-Boston Engineers has the honour to cooperate and provide services to many clients. Some of Major and well-known TBE clients are listed below :

• Ministry of Power
• Ministry of Housing and Urban Development
• Ministry of Health, Treatment, and Medical Education
• Iranian Management and Planning Authority
• World Health Organization (WHO) - Geneva Switzerland
• Tehran Regional Water Authority
• Khouzestan Water and Power Authority
• Mazandaran Regional Water Authority
• Esfahan Regional Water Authority
• Khorasan Regional Water Authority
• Fars Regional Water Authority
• Iranian Water and Wastewater Engineering Company
• Tehran Water and Wastewater Company
• Khouzestan Water and Wastewater Company
• Central Province Water and Wastewater Company
• Kerman Water and Wastewater Company
• Sistan & Balouchestan Water and Wastewater Company
• Chahar Mahal va Bakhtyari Water and Wastewater Company
• National Iranian Petrochemical Company
• Petrochemical Special Economic Zone Authority
• Maroon Petrochemical Company
• Kish Civil & Service Company
• Omran Rafsanjan Company
• Qazvin Industrial parks Company
• Iranian Aviation Authority
• Tehran Municipality
• Ahvaz Steel Industries Company
• National Iranian Steel Industries Group
• Alborz Industrial City Company
• Falegh Sanat Company