Yes, if you are eligible for a personal pension, you can have a number of plans. The Revenue Commissioners will add up all the contributions and you will get income tax relief up to a certain limit.
This graph shows the maximum contribution you can make, as a percentage of your earnings, for which you can claim income tax relief.
It is important that you get advice on the amount you should be paying into your pension. You should also learn about the amount of pension benefits that will be available to you when you retire.