If you're looking for anime similar to Lupin III: Part III, you might like these titles. All recommendations are made by Anime-Planet users like you!
Shinichi Kudo is a famous teenage detective who idolizes Sherlock Holmes and solves difficult cases with ease. One day, after a fun day at the theme park with his childhood friend Ran, Shinichi witnesses something suspicious and is knocked unconscious. What’s worse, he’s forced to take a deadly, experimental drug that shrinks his body to the age of seven. To protect himself and his loved ones from those who may want to finish the job, Shinichi dons the new name Conan Edogawa and moves in with Ran, whose father is a famous detective, in hopes of closing cases that can lead him to the men in black. But little does Shinichi know just how dangerous these men, and their cause, are...
Both of these series are centred around the world of crime, and while they approach from opposite sides, if you like the crime genre then both of these are for you. Both series also have a good mix of comedy, action and intrigue and often include a nice little twist at the end of each case. Also, both Lupin III and Detective Conan are relatively episodic (though Conan has more ongoing plot) so if you liked that about one, you are likely to enjoy that about the other.
Bolt Crank is a mercenary. Rather than selling his services to whoever can pay, he accepts jobs for his own reasons, and insists on doing things his way. This isn't the only thing that makes Bolt different, for he also has an appetite for eating metal, and can actually reform things he has eaten into the palm of his hand! Follow Bolt's journey and watch while he takes on jobs, makes some money, and saves beautiful women in need.
Though Lupin III focuses on thieves and Eat-Man a mercenary, both series are aimed at an older audience and have plenty of action. Both series are also episodic so they are easy to pick up as and when you want to watch them. If you liked one, it's worth checking out the other.