Matthias Yu Chengxin (Chinese: 余成信; 27 December 1927 – 7 December 2017) was a Chinese clandestine Roman Catholic bishop.
Bishop Yu was born in the Roman Catholic family in 1927.
He joined the theological seminary, but was forced to interrupt his studies and in the time of the Cultural Revolution was detained and sent to a forced labour camp.
Bishop Yu was never recognised by the Chinese government and never joined the Chinese Patriotic Catholic Association.
This article about a Catholic bishop or archbishop from China is a stub.