| Honorific-Prefix: | Admiral |
| Thadeu Marcos Orosco Coelho Lobo | |
| Office: | Commander of the Brazilian Submarine Force |
| Term Start: | 16 December 2019 |
| President: | Jair Bolsonaro |
| 1Blankname: | Minister of Defence |
| 1Namedata: | Fernando Azevedo e Silva |
| 2Blankname: | Navy Commander |
| 2Namedata: | Ilques Barbosa Junior |
| Predecessor: | Luiz Carlos Roças Corrêa |
| Birth Place: | Rio de Janeiro, Brazil |
| Allegiance: |  Brazil |
| Branch: | Brazilian Navy |
| Rank: | Rear Admiral |
| Serviceyears: | 1989−present |
Thadeu Marcos Orosco Coelho Lobo (born in Rio de Janeiro)[1] is a Brazilian Rear Admiral, and current Commander of the Brazilian Submarine Force (ComForS) and as of 16 December 2019,[2] he replaced Luiz Carlos Roças Corrêa in the Command of the ComForS.[3]