S41
S41 stands for:
- S-Bahn line 41 (Berlin)
- S-Bahn line 41 (Carinthia)
- HMS Unseen (S41) , see HMCS Victoria (SSK 876) , Canadian submarine
- Humaitá (S41) , Brazilian submarine, see Scorpène class #Brazilian Navy
- S41 (Austria), Salzburger Schnellstraße, see Salzburger Straße
- DJ-S41 , amateur radio, see list of amateur radio equipment # DJ-S41
- Sint-S41 (sintered steel with C, Cu, Ni), see material number #Sintermetalle
- "Open wound of the shoulder and upper arm", see International Statistical Classification of Diseases and Related Health Problems
- "What scepter with spiral shaft ", see Gardiner list #S - crowns
- Cat S41, a Burlitt Group smartphone sold under the Caterpillar brand
