| SCHD | Summit County Health District (Ohio) | Summit County Health District（俄亥俄州） |
| SCHD | Saginaw County Health Department (Michigan) | 萨吉诺县卫生部（密歇根州） |
| SCHD | Soft Hadamard Column Decoder | 软Hadamard列解码器 |
| SCHD | SicherheitsDienst (Security service of the SS, former security service of the NSDAP) | SicherheitsDienst（党卫军安保部门，前NSDAP安保部门） |