|Portrayed by||Steve Park|
|First seen||The Leviathan|
|Last seen||T-Bone and the Iceman|
|Parents|| Mary Watson (mother) |
Henry Watson (step-father)
Unnamed birth father
|Significant other(s)||Gabrielle Harper|
Oren Watson is Joan Watson's brother.
Oren is only seen when he was visiting his sister Joan Watson and having dinner with their family and Joan's friend Sherlock Holmes. He brought his girlfriend Gabrielle Harper with him, and Sherlock suspects they'll soon get engaged.
He is later only heard on the phone talking to Joan, telling her that he had got a call from a doctor, telling him that their mother was in the hospital due to a fall. He was actually called by Moriarty who needed to get Joan away from Sherlock to have a conversation with her.
Joan's mother, Mary, visits Oren and his wife Gabrielle, she comes to believe that Oren is having an affair when she thinks she sees him kissing a blonde woman. She pushes Joan to discuss the matter with her brother. Oren vehemently denies any wrong doing, which leads Joan to question her mother's neurological health.
|Season one appearances|
|Pilot||While You Were Sleeping||Child Predator||Rat Race|
|Lesser Evils||Flight Risk||One Way to Get Off||The Long Fuse|
|You Do It to Yourself||The Leviathan||Dirty Laundry||M.|
|The Red Team||The Deductionist||A Giant Gun, Filled with Drugs||Details|
|Possibility Two||Déjà Vu All Over Again||Snow Angels||Dead Man's Switch|
|A Landmark Story||Risk Management||The Woman||Heroine|
|Season three appearances|
|Enough Nemesis To Go Around||The Five Orange Pipz||Just a Regular Irregular||Bella|
|Rip Off||Terra Pericolosa||The Adventure of the Nutmeg Concoction||End of Watch|
|The Eternity Injection||Seed Money||The Illustrious Client||The One That Got Away|
|Hemlock||The Female of the Species||When Your Number's Up||For All You Know|
|T-Bone and the Iceman||The View From Olympus||One Watson, One Holmes||A Stitch in Time|
|Under My Skin||The Best Way Out Is Always Through||Absconded||A Controlled Descent|
Every photo of Oren Watson on this wiki can be seen here.
|Jin May Wen||Yun||Henry Watson|
|Lin Wen||Joan Watson|
- The fact that Joan's brother is named Oren is an inadvertent homage to Lucy Liu's character in Kill Bill, named O-Ren Ishii.