| CNEC Lee I Yao Memorial Secondary School | |
| Motto: | Faith, Righteousness, Loyalty & Honesty |
| Established: | 1981 |
| Type: | Co-ed, aided |
| Affiliation: | Christian Nationals' Evangelism Commission (CNEC) (Chinese: 中華傳道會) |
| District: | Kwai Shing |
| Principal: | Mr. Tang Kam Ming |
| Students: | Approx. 1200 |
| Colors: | Blue, Red, Green & Yellow |
| Location: | 1 Shing Fuk Street, Kwai Shing, New Territories |
| Country: | Hong Kong |
| Website: | http://www.liymss.edu.hk/ |
CNEC Lee I Yao Memorial Secondary School (LIY) is an aided Chinese medium of instruction school founded in 1981 upon the principles of Christian evangelicalism. Its sponsoring body is the Christian Nationals' Evangelism Commission .
LIY is located in Kwai Shing, within the larger industrial district of Kwai Chung, which is well known for its busy container terminal.