Can anyone identify this part?

[DrTwitch]

Was cleaning the Jeep and found this random pin under the back seat. Any ideas?

 

[DaYooperTransplant]

Appears to be the clip that holds the back seat in its bracket.

 

[TominAZ]

Looks like a door crank handle pin. Those fly away a lot and get lost.

 

[Jerry Bransford]

Appears to be the clip that holds the back seat in its bracket.

X2. Given its location that's exactly what it is. Look for the groove in the pin that holds the seat in the brackets, that clip goes in the groove to hold the seat in.