Debuting in 2003, Blackwell has played 10 Tests, 116 ODIs and 73 T20 Internationals for her country.
The right-hander has amassed 2697 ODI runs at 33.29, including two centuries and 19 half-centuries, plus four Test 50s also to her name.
Heading into the current Ashes series, Blackwell already has been part of winning Australian teams in two World Cups, three World Twenty20s and one Ashes.
ACA Chief Executive Alistair Nicholson congratulated Blackwell – who is also an ACA player delegate – on her wonderful achievement.
“We are thrilled that you have been able to grow into and then maintain your standing as a key international player over more than 12 years; it speaks volumes for your skill, motivation and commitment.
“You have invested heavily and more than most to reach this point and approached your craft with great passion and determination. I’ve no doubt the rewards have been worth every bit of it.
“Beyond your achievements on the field, your contribution more broadly to women’s cricket has been enormous and you have been a strong advocate for your peers and the game.
“On behalf of all members, staff and Executive of the ACA, I congratulate you on reaching 200 games and wish you all the best for the Test and beyond.”