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non so dove sia

I don't know where it is

→ non
phrase Common #7,809
I don't know where it is Used to say that you do not know the location of something or someone. The subjunctive sia is commonly used after non so dove; the form changes according to what is being referred to, such as non so dove siano for plural things or people.
IT: Non so dove sia il caricatore.
EN: I don't know where the charger is.

Non so dove sia il tuo ombrello.

I don't know where your umbrella is.

Io non so dove sia Tom adesso.

I don't know where Tom is now.

Non so dove sia Tom.

I don't know where Tom is.

Non so dove sia.

I don't know where it is.

— Titane (2021)

Dicevo sul serio, non so dove sia.

I was serious, I don't know where it is.

— Love Actually - L'amore davvero (2003)

Non so dove sia il suo passaporto.

I don't know where his/her passport is.

— Bajrangi Bhaijaan (2015)

Non so dove sia Tom adesso.

I don't know where Tom is now.

Non so dove sia la morfina.

I don't know where the morphine is.

— Warfare - Tempo di guerra (2025)

Ad essere onesto, non so dove sia, ma so che esiste.

To be honest, I don't know where it is, but I know it exists.

— Loveless (2017)

Io non so dove sia Tom.

I don't know where Tom is.

Ma non so dove sia!

But I don't know where it is!

— La canzone del mare (2014)

Io non so dove sia il suo quadro.

I don't know where his painting is.