| Signo 2019327 · TMA1181169 | an individual | 9 Electronics | Registered | 2023 |
| Soign 1987777 · TMA1130345 | 1179352 B.C. Ltd. | 3 Cosmetics35 Advertising | Registered | 2022 |
| SIGNO 0752702 · TMA443709 · design | MITSUBISHI PENCIL COMPANY, LIMITED | 16 Paper | Registered | 1995 |
| SIGNIA 1779529 · TMA1037311 · design | Sivantos Pte. Ltd. | 5 Pharmaceuticals9 Electronics10 Medical+4 | Registered | 2019 |
| SIGNIA 1760578 · TMA1033471 | Signia GmbH | 5 Pharmaceuticals35 Advertising37 Construction+2 | Registered | 2019 |
| SIGNIA 1760574 · TMA1033595 | Signia GmbH | 9 Electronics10 Medical | Registered | 2019 |
| SIGNIA 1709713 · TMA984872 | Covidien LP | 10 Medical | Registered | 2017 |
| SAIGON 1677086 · TMA919800 · design | Little Saigon Holdings Ltd. | 29 Meat30 Coffee43 Restaurants | Registered | 2015 |
| SAIGON 1548793 · TMA855780 | Cong Ty Co Phan Cao Su Sai Gon-Kymdan (Saigon-Kymdan Rubber Stock Company) | 20 Furniture | Registered | 2013 |
| SAIGON 1506064 · TMA834126 · design | Little Saigon Holdings Ltd. | 29 Meat30 Coffee43 Restaurants | Registered | 2012 |
| SAIGON 1506059 · TMA834125 | Little Saigon Holdings Ltd. | 29 Meat30 Coffee43 Restaurants | Registered | 2012 |
| SAIGON 1480441 · TMA791095 | On Sight Equipment Ltd. | 9 Electronics18 Leather | Registered | 2011 |
| SIGNIA 1063105 · TMA563203 | Signia GmbH | 10 Medical | Registered | 2002 |
| SignAI 2301938 | Owner not listed | 9 Electronics42 Science | Pending | 2023 |
| SUGON 2212826 · TMA1245272 · design | Foshan Cengon Electronic Intelligent Equipment Co., Ltd. | 7 Machines | Registered | 2024 |
| SIZEN 2147432 · TMA1216277 | OMEX AGRIFLUIDS, INC. | 1 Chemicals | Registered | 2023 |
| SICON 2121070 · TMA1206144 | Pfisterer Kontaktsysteme GmbH | 6 Metal9 Electronics20 Furniture | Registered | 2023 |
| Segan 2068948 · TMA1162391 | an individual | 18 Leather | Registered | 2023 |
| SAGAN 2052963 · TMA1163399 · design | White Gold Food Inc. | 29 Meat30 Coffee | Registered | 2023 |
| SIJIN 2047502 · TMA1148020 | Shenzhen HeiJingGang Technology Co. Ltd | 28 Toys | Registered | 2022 |
| SIGMA 2041429 · TMA1122499 | an individual | 7 Machines | Registered | 2022 |
| SIGMA 2001859 · TMA1202277 | Hitachi-Johnson Controls Air Conditioning, Inc. | 11 Lighting | Registered | 2023 |
| SIGMA 1880186 · TMA1058602 · design | an individual | 7 Machines | Registered | 2019 |
| SIGMA 1850774 · TMA1110714 | CARL ZEISS MICROSCOPY GMBH | 9 Electronics | Registered | 2021 |
| SIGMA 1847334 · TMA1087179 · design | Hansen Technologies Canada, Inc. | 9 Electronics42 Science | Registered | 2020 |