Which note is on the first space of the treble clef?

The first space of the treble clef is occupied by the note E. In music notation, particularly in the treble clef, the notes are arranged on the lines and spaces in a specific order. The spaces of the treble clef, starting from the bottom to the top, correspond to the letters E, G, B, D, and F.

Therefore, when asked to identify the note found on the first space of the treble clef, E is the correct answer as it is the specific note that resides in that location. This understanding is crucial for reading and writing music accurately, as each space and line represents different pitches.