Exhibit 8.01

Subsidiaries of the Registrant



|                                   |  |                               |  |                                               |  |                                                                                               
|---------------------------------- |  | ----------------------------- |  | --------------------------------------------- |  | ----------------------------------------------------------------------------------------------
|Subsidiary                         |  | Jurisdiction of
Incorporation |  | Name Under Which the
Subsidiary Does Business |  | Ownership Interest                                                                            
|                                   |  |                               | 
|Viva GyM S.A.                      |  | Peru                          |  | Viva GyM                                      |  | Graña y Montero owns
60.6%; GyM owns 39.0%                                                    
|                                   |  |                               | 
|GyM S.A.                           |  | Peru                          |  | GyM                                           |  | Graña y Montero owns 98.2%                                                                    
|                                   |  |                               | 
|Concesionaria La Chira S.A.        |  | Peru                          |  | La Chira                                      |  | Graña y Montero owns 50.0%                                                                    
|                                   |  |                               | 
|Concesión Canchaque S.A.           |  | Peru                          |  | Canchaque                                     |  | Graña y Montero owns 99.9%                                                                    
|                                   |  |                               | 
|Concar S.A.                        |  | Peru                          |  | Concar                                        |  | Graña y Montero owns 99.8%                                                                    
|                                   |  |                               | 
|GMP S.A.                           |  | Peru                          |  | GMP                                           |  | Graña y Montero owns 95.0%                                                                    
|                                   |  |                               | 
|GMD S.A.                           |  | Peru                          |  | GMD                                           |  | Graña y Montero owns 89.37%                                                                   
|                                   |  |                               | 
|GyM Ferrovías S.A.                 |  | Peru                          |  | GyM Ferrovías                                 |  | Graña y Montero owns 75.0%                                                                    
|                                   |  |                               | 
|Norvial S.A.                       |  | Peru                          |  | Norvial                                       |  | Graña y Montero owns 67.0%                                                                    
|                                   |  |                               | 
|CAM Chile S.A.                     |  | Chile                         |  | Cam                                           |  | Graña y Montero owns 75.0%                                                                    
|                                   |  |                               | 
|Survial S.A.                       |  | Peru                          |  | Survial                                       |  | Graña y Montero owns 99.9%                                                                    
|                                   |  |                               | 
|GMI S.A.                           |  | Peru                          |  | GMI                                           |  | Graña y Montero owns 89.4%                                                                    
|                                   |  |                               | 
|Stracon GyM S.A.                   |  | Peru                          |  | Stracon GyM                                   |  | GyM owns 87.6%                                                                                
|Vial y Vives - DSD S.A.            |  | Chile                         |  | Vial y Vives                                  |  | GyM owns 80.79%                                                                               
|Inmobiliaria Almonte S.A.C.        |  | Peru                          |  | Almonte                                       |  | Viva GyM owns 50.4%                                                                           
|                                   |  |                               | 
|Morelco S.A.                       |  | Colombia                      |  | Morelco                                       |  | Graña y Montero owns 70.0%                                                                    
|                                   |  |                               | 
|Concesionaria Via Expresa Sur S.A. |  | Peru                          |  | VESUR                                         |  | Graña y Montero owns 99.98%; GyM owns the remaining 0.02%                                     
|                                   |  |                               | 
|Agenera S.A.C.                     |  | Perú                          |  | Agenera                                       |  | Graña y Montero owns 99%                                                                      
|                                   |  |                               | 
|GyM Colombia S.A.S.                |  | Colombia                      |  | GyMColombia                                   |  | Graña y Montero owns 66.2%,
GyM owns the remaining 33.8%                                      
|                                   |  |                               | 
|Negocios de Gas S.A.               |  | Peru                          |  | Negocios de Gas                               |  | Graña y Montero owns 99.99%,
the remaining 0.01% Is owned by GyM.                             
|                                   |  |                               | 
|Tecgas Inc                         |  | Canadá                        |  | Tecgas                                        |  | Graña y Montero owns 51%,                                                                     
|                                   |  |                               | 
|Generadora Arabesco S.A.           |  | Peru                          |  | Generadora Arabesco                           |  | Graña y Montero owns 99%,                                                                     
|                                   |  |                               | 
|Adexus S.A.                        |  | Chile                         |  | Adexus                                        |  | Graña y Montero owns 44%,                                                                     
|                                   |  |                               | 
|Recaudo Lima S.A.                  |  | Perú                          |  | Recaudo Lima                                  |  | Graña y Montero owns 70%,
GMD owns the remaining 30%                                          
|                                   |  |                               | 
|CAM Servicios del Perú S.A.        |  | Perú                          |  | CAM Servicios del Perú                        |  | Graña y Montero owns 73.16%                                                                   
|                                   |  |                               | 
|Promotora Larco Mar S.A.           |  | Perú                          |  | Promotora Larco Mar                           |  | Graña y Montero owns 46.55%                                                                   
|                                   |  |                               | 
|TGNCA S.A.                         |  | Perú                          |  | TGNCA                                         |  | Graña y Montero owns 99.33%                                                                   
|                                   |  |                               | 
|Compañía de Gas del Amazonas S.A.  |  | Perú                          |  | COGA                                          |  | Graña y Montero S.A.A. indirectly owns 51%                                                    
|                                   |  |                               | 
|Coasin Instalaciones Limitada      |  | Chiñe                         |  | Coasin                                        |  | CAM Chile owns 99.89%, the remaining 0.11% is owned by Inversiones y Construcción GyM Limitada