A gear shift indicator for a vehicle having a transmission whose transmission speed or transmission speed range is shifted by a gear shifting operation by a driver, said gear shift indicator instructing the driver about a gear shifting operation to a proper transmission speed or a transmission speed range serially set, comprising: a gear shift indicating device (30, 130, 132, 134) having only one upshift indicating lamp to instruct the driver about upshifting and only one downshift indicating lamp to instruct the driver about downshifting each, the gear shift indicator is configured to indicate an instruction about a gear shift operation to vary an actual transmission speed or transmission speed range to the proper transmission speed or transmission speed range using only one of the two indicating lamps (44, 46) when the actual transmission speed or transmission speed range of the transmission and the proper transmission speed or transmission speed range are different from each other, and characterized in that when only one of a first condition and a second condition different from the first condition is employed as a condition, the gear shift indicator is configured to instruct the driver on the gear shifting operation to vary to the proper transmission speed or transmission speed range on the basis of the only one of the first condition and the second condition using a single instruction method, while when the first condition and the second condition are both employed as conditions, the gear shift indicator is configured to instruct the driver on the gear shifting operation to vary each to the proper transmission speed or transmission speed range on the basis of each of the first condition and the second condition using each instruction method different from each other, and based on the two different conditions using only one of the two indicating lamps. a gear shift indicating device (30, 130, 132, 134) having only one upshift indicating lamp to instruct the driver about upshifting and only one downshift indicating lamp to instruct the driver about downshifting each, the gear shift indicator is configured to indicate an instruction about a gear shift operation to vary an actual transmission speed or transmission speed range to the proper transmission speed or transmission speed range using only one of the two indicating lamps (44, 46) when the actual transmission speed or transmission speed range of the transmission and the proper transmission speed or transmission speed range are different from each other, and characterized in that when only one of a first condition and a second condition different from the first condition is employed as a condition, the gear shift indicator is configured to instruct the driver on the gear shifting operation to vary to the proper transmission speed or transmission speed range on the basis of the only one of the first condition and the second condition using a single instruction method, while when the first condition and the second condition are both employed as conditions, the gear shift indicator is configured to instruct the driver on the gear shifting operation to vary each to the proper transmission speed or transmission speed range on the basis of each of the first condition and the second condition using each instruction method different from each other, and based on the two different conditions using only one of the two indicating lamps.