Latest Casino Bonuses for September 2025

iLucki

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Sign-up Bonus:

20

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No deposit required

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iLucki

Special Lucky Welcome Bonus + 20 Free Spins for Mobile Verification!

August 30

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  • Bonus available on your second purchase
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Cleopatra Casino

Discover Cleopatra’s Secret Treasure: €8,000 for New Players

Welcome offer:

100% Bonus up to

€4,000

Bonus on first deposit

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Cleopatra Casino

Discover Cleopatra’s Secret Treasure: €8,000 for New Players

August 29

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Fun Casino

100% up to €123 on Your First Deposit, As Simple as 1, 2, 3

Welcome offer:

100% Bonus up to

€123

Bonus on first deposit

Significant Terms: Welcome bonus for a new players only · Maximum bonus is 100% up to €123 · Min deposit is €10 · No max cash out · Wagering is 50x bonus · Maximum bet while playing with a bonus is €5 · Eligibility is restricted for a suspected abuse · Skrill and Neteller deposits excluded · Terms & Conditions apply  · #Ad ·  Gambling can be addictive. Play responsibly · GambleAware.org 

Fun Casino

100% up to €123 on Your First Deposit, As Simple as 1, 2, 3

August 27

  • 100% Bonus up to €123 with your first deposit (New customers)
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  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
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Ybets

Taste the Victory with Casino, Sportsbook, Live Betting, and Daily Chances to Win up to 5 BTC

Welcome offer:

200% Bonus up to

$2,000

+ 100 Free Spins

Bonus on first deposit

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Ybets

Taste the Victory with Casino, Sportsbook, Live Betting, and Daily Chances to Win up to 5 BTC

August 23

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  • Bonus available on your second and third deposit
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  • Online sports betting
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  • Rating: 4.2/5
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Immerion

Claim Up to $4,000 + 250 Free Spins - Join the Engine of Fortune for a Chance to Win up to 5 BTC

Welcome offer:

100% Bonus up to

$1,000

+ 100 Free Spins

Bonus on first deposit

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Immerion

Claim Up to $4,000 + 250 Free Spins - Join the Engine of Fortune for a Chance to Win up to 5 BTC

August 22

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  • Rating: 4.1/5
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Villento Casino

Start Playing with Up to €1,000 in Free Bonuses

Welcome offer:

100% Bonus up to

€150

Bonus on first deposit

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Villento Casino

Start Playing with Up to €1,000 in Free Bonuses

August 13

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  • Bonus available on your second and third deposit
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PlayGrand Casino

A Grand Welcome Bonus – Get €1,000 Free + 100 Free Spins!

Welcome offer:

100% Bonus up to

€300

+ 30 Free Spins

Bonus on first deposit

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PlayGrand Casino

A Grand Welcome Bonus – Get €1,000 Free + 100 Free Spins!

August 11

  • 100% Bonus up to €300 + 30 Free Spins with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • Irish players are accepted
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  • Tested and certified by Casino Bonus Center · Rating: 3.8/5
  • 106 Game Providers: Spinmatic, High Limit Studio, Flip Five Gaming, Gameburger Studios, Pragmatic Play, Coin Machine Gaming, Stormcraft, Ezugi, Oi Studios, Alchemy Gaming, Slotmill, Games Inc, and others.

Top 10 Online Casino Bonuses in Ireland (September 2025)

Expert-Rated Real Money Casinos with Top Bonuses

Looking for the best online casinos in Ireland? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for August 2025. LeoVegas, Zodiac Casino, and EnergyCasino lead our rankings, standing out for their extensive selection of high-paying slots, immersive live dealer tables, exclusive bonuses, and lightning-fast payouts.

Browse our expert-ranked list below and claim your exclusive welcome bonuses today!

Online Casinos IrelandWelcome Bonus

Up to €1,000 + 200 free spins!

Bonus of 100% up to €1,000 + 200 Free Spins

80 chances to be a millionaire for €1

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30 free spins plus €400!

Bonus of 100% up to €200

Sportsbook · Casino · Awesome bonuses

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Bonus of 200% up to €500 + 100 Free Spins

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€200 bonus + 10 free spins on Vegas

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Get a 200% Bonus up to £200

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Sportsbook, casino, live casino

Bonus of 100% up to €100 + 50 Free Spins

* Terms & Conditions Apply · #Ad ·  Gambling can be addictive. Play responsibly · GambleAware.org 

With nearly two decades of experience in the industry, CasinoBonusCenter.com has been analyzing and comparing online casinos since 2006. Our dedicated team of professionals has handpicked the most trusted casinos for Irish players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.