Baccano!

If you're looking for manga similar to Baccano!, you might like these titles.

HK Dragnet

HK Dragnet

The father whom he’d thought was dead was actually a Hong Kong mafia boss?! Iba Takayuki was leading a peaceful life as a high-school student until the men in black suits suddenly showed up for him one day. Takayuki learns that in return for inheriting a vast fortune, he must take revenge against his father’s killers and battle for succession rights against his stepbrother, Arthur, a young man only slightly older than himself. But one look at Arthur’s gorgeous and clearly hostile face, and Takayuki’s heart is lost… Takayuki meets Jason, an any-problem-can-be-solved-with-a-fist executive officer, and Craig, a cool and collected staff officer. Trusting in their capable guardians, the two stepbrothers will discover love and conflict in each other as they boldly fight for survival in Hong Kong’s dark underworld!

I agree

Assassine

Assassine

It is the near future and the age of criminal organizations fighting for territory with their own crew has ended as they figured that it was neither economical nor practical. The new method of territory warfare is done with each criminal organization hiring an assassin and betting their land on which assassin survives the modern day coliseum.Bando Eiji aka Gun Mania is a top rated assassin for the Kuroyanagi group. A young man named Kusano Nonomura of the now overthrown Kusano organization seems to have a vengeance against Bando, the Kuroyanagi family and the entire criminal world. Blood will be shed very soon.

I agree

Lucky Dog 1 Blast

Lucky Dog 1 Blast

Gian Carlo Bourbon Del Monte, a young member of the mafia, is better known by his nickname "Lucky Dog" due to his incredibly good luck. Despite knowing that he can escape with just a little effort, Gian decides to take a break from the fast-and-furious lifestyle while being held in a maximum-security prison. But when four young mafia captains are captured and brought to the same prison, the Boss of their syndicate makes a certain request of Gian...

I agree

Shichifuku Mafia

Shichifuku Mafia

As a vigilante group loved by the local residents, the Alfano Family spent their days living peacefully. However, ever since the rise of a rival Mafia, dark clouds have been hovering over them.. “Go to your late mother (former Yakuza)’s homeland, Japan, and bring the seven strongest people who were once her subordinates.” Accepting this secret order, Leo heads to Japan. The seven people he seeks for are… The Seven Gods of Fortune that were sealed away in a hanging scroll!

I agree

Tsukinowaguma Koroshiya

Tsukinowaguma Koroshiya

A black bear works for the mafia.

I agree

Silence (Koito AKIYAMA)

Silence (Koito AKIYAMA)

Luca Angeli was born without a voice, but as he grew to have a beautiful features, his parents sold him to the mafia, where he has been living as a (sex) toy. One day, his cruel owners were taken down by Shion, a mafia hitman with mysterious powers, and he was freed. However, with nowhere to go, Luca could do nothing but remain where he was, thinking of his stoic-looking, taciturn savior...

I agree

Deep Love: Real

Deep Love: Real

The man whose eyes are re-awakening, Yoshiyuki. At the age of 18 years old he lives a life of hopelessness, and thus visits the host club Platinum in Shibuya. They all thought it: “Yoshiyuki wouldn’t be suited to a become a host.” At that time, only the number one host Taku looked into his eyes and saw that they were different from those of ordinary men…

I agree

Arcana Famiglia: Amore Mangiare Cantare!

Arcana Famiglia: Amore Mangiare Cantare!

The Arcana Famiglia is no ordinary mafia. The organization, headed by the powerful Mondo, lives on Regalo Island and protects its citizens from crime and corruption with the help of certain members who wield supernatural powers known as Arcana. But Mondo is growing older, and has decided to organize a tournament to determine which Arcana wielder will take his place – and his daughter Felicitá's hand in marriage, much to her dismay. Now, as Felicitá herself and other friends and colleagues wait to enter the competition, they reminisce about old times, perform good deeds for the townsfolk and continue to hone their Arcana skills.

I agree

Rose Guns Days Season 2

Rose Guns Days Season 2

While the Wandering Dogs suffer a break up at the reveal of Zel's true identity, District 23 is on the cusp of falling under the Golden Dragons' thumb. Primavera refuses to give in, staunchly standing off against the Chinese, but they need all the help they can get. Will Oliver, Nina, and Charles be able to pull together and help save Zel and Primavera, or will it be the end of District 23 as they know it?

I agree

Rose Guns Days Season 1

Rose Guns Days Season 1

After suffering unprecedented disasters in World War II, Japan accepts the American and Allied Forces' terms of unconditional surrender. Now the citizens of a ruined nation, the people of Japan come together amid an influx of influences and immigrants and - cunningly, carefully - survive... This is the unrecognizable Japan to which the sharpshooting, sweet-talking womanizer Leo Shishigami returns three years after the war. Against this backdrop, in the spring of 1947, everything is set into motion when Leo meets Rose Haibara, the Madam of Club Primavera...

I agree