Exhibit 8.1

LIST OF SUBSIDIARIES

(as of March 31, 2017)



|                                                                                      |  |                              
|------------------------------------------------------------------------------------- |  | -----------------------------
|NAME OF ENTITY                                                                        |  | JURISDICTION OF INCORPORATION
|CHIEF Telecom Inc.                                                                    |  | Taiwan, ROC                  
|Chunghwa International Yellow Pages Co., Ltd.                                         |  | Taiwan, ROC                  
|Chunghwa Investment Co., Ltd.                                                         |  | Taiwan, ROC                  
|Chunghwa Precision Test Tech. Co., Ltd.                                               |  | Taiwan, ROC                  
|Chunghwa System Integration Co., Ltd.                                                 |  | Taiwan, ROC                  
|Light Era Development Co., Ltd.                                                       |  | Taiwan, ROC                  
|Senao International Co., Ltd.                                                         |  | Taiwan, ROC                  
|Spring House Entertainment Tech. Inc.                                                 |  | Taiwan, ROC                  
|Unigate Telecom Inc.                                                                  |  | Taiwan, ROC                  
|Honghwa International Co., Ltd. (formerly known as Honghwa Human Resources Co., Ltd.) |  | Taiwan, ROC                  
|New Prospect Investments Holdings Ltd.                                                |  | British Virgin Islands       
|Prime Asia Investments Group Ltd.                                                     |  | British Virgin Islands       
|Concord Technology Co., Ltd.                                                          |  | Brunei                       
|Donghwa Telecom Co., Ltd.                                                             |  | Hong Kong                    
|Senao International HK Limited                                                        |  | Hong Kong                    
|Chunghwa Hsingta Co., Ltd.                                                            |  | Hong Kong                    
|Chunghwa Telecom Japan Co., Ltd.                                                      |  | Japan                        
|CHPT Japan Co., Ltd.                                                                  |  | Japan                        
|Chief International Corp.                                                             |  | Samoa Islands                
|Senao International (Samoa) Holding Ltd.                                              |  | Samoa Islands                
|Chunghwa Precision Test Tech. International, Ltd.                                     |  | Samoa Islands                
|Glory Network System Service (Shanghai) Co., Ltd.                                     |  | Peoples Republic of China   
|Chunghwa Telecom (China), Co., Ltd.                                                   |  | Peoples Republic of China   



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|                                                     |  |                              
|---------------------------------------------------- |  | -----------------------------
|NAME OF ENTITY                                       |  | JURISDICTION OF INCORPORATION
|Chunghwa Telecom Singapore Pte., Ltd.                |  | Singapore                    
|Chunghwa Telecom Global, Inc.                        |  | United States of America     
|Chunghwa Precision Test Tech. USA Corporation        |  | United States of America     
|Chunghwa Telecom Vietnam Co., Ltd.                   |  | Vietnam                      
|Chunghwa Sochamp Technology Inc.                     |  | Taiwan, ROC                  
|Smartfun Digital Co., Ltd.                           |  | Taiwan, ROC                  
|Senao Trading (Fujian) Co., Ltd.                     |  | Peoples Republic of China   
|Senao International Trading (Shanghai) Co., Ltd.     |  | Peoples Republic of China   
|Senao International Trading (Shanghai) Co., Ltd.     |  | Peoples Republic of China   
|Senao International Trading (Jiangsu) Co., Ltd.      |  | Peoples Republic of China   
|Jiangsu Zhenhua Information Technology Company, LLC. |  | Peoples Republic of China   
|Shanghai Taihua Electronic Technology Limited        |  | Peoples Republic of China   
|Youth Co., Ltd.                                      |  | Taiwan, R.O.C.               
|Aval Technologies Co., Ltd.                          |  | Taiwan, R.O.C.               
|ISPOT Co., Ltd.                                      |  | Taiwan, R.O.C.               
|Youyi Co., Ltd.                                      |  | Taiwan, R.O.C.               
|Shanghai Chief Telecom Co., Ltd.                     |  | Peoples Republic of China   
|Chunghwa Leading Photonics Tech Co., Ltd.            |  | Taiwan, R.O.C.               
|Chunghwa Telecom (Thailand) Co., Ltd.                |  | Thailand                     





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