1. 4/4 time: This is the most common time signature used in jazz and has four beats in each bar. Each beat can be divided into 2 eighth notes or 3 sixteenth notes.
2. 2/2 time: This time signature has two beats in each bar and each beat can be divided into 2 half notes or 4 quarter notes.
3. 3/4 time: This time signature has three beats in each bar and each beat can be divided into 2 half notes or 4 quarter notes.
4. 6/8 time: This time signature has six beats in each bar and each beat can be divided into 2 eighth notes or 3 sixteenth notes.
5. 12/8 time: This time signature has twelve beats in each bar and each beat can be divided into 2 eighth notes or 3 sixteenth notes.
These are just a few common time signatures used in jazz, and there are other complex time signatures that are employed, such as 5/4, 7/4, 9/8, and so on. The specific time signature is often indicated at the beginning of the musical piece or jazz chart.