The county board have fixed the opening rounds of both championships.
The Offaly football and hurling championships will get underway the last week and July and the first weekend of August.
The county board have announced fixtures, dates and times for the early stages of the championship for all grades.
Further confirmation of dates for rounds 4 and 5 of the junior football & hurling championships and the U20 football and hurling competitions will be announced early next week.
Here's the list in full: