Impacted bowels from a love session with Draco.

 

Perspicacity already covered this, except replace Hedwig with Ginny...

What? Harry/Hedwig is hot, and a terrible way for Indy!Harry to die. Go through that hard magical ritual (draw on the floor with chalk, in a design covered by "Going Solo Made Easy) to make your familiar human, then it gives you an STD.

 

Philosopher's Stone, Hagrid knocks down the door of the hut, it hits Harry on the head and kills him.

 

Dumbledore mismanages the Order's finances and they fall into financial ruin. To save them, Harry takes Felix Felicis and hits the casinos, only to be whacked by an organized crime hitman after cleaning house.

 

Chamber of Secrets. Hagrid opens the door with the crossbow armed but slips on the trigger.

 

Death by suffocation after locking himself in his magical!trunk to train.

 

Half Blood Prince. Draco stomps on Harry's face on the train ride in and rams cartilage into his brain.

 

This is oddly addictive.

Dementor animagus form is accidentally killed by the love-fueled Golden Patronus of Ginny Weasley.

 

Harry and Hermione decide to do the nasty. Beforehand, Harry feels sexually inadequate and casts Engorgio on his erect penis, but accidentally overpowers the spell.

Two minutes later, he dies from blood loss to the brain.

 

When idly browsing a Muggle bookstore in his later years, he decides to purchase a book.

Seventy-seven pages later, he expires, dead from the massive heart attack at the stupidity that is Twilight.

 

The rubble crushes Harry and Ron while trying to access the CoS after Lockhart was obliviated.

 

Runs headfirst into the concrete column between platforms 9 and 10- and hits solid rock.

 

I dunno if you guys remember, but I had a story a while ago that was getting worse and worse, so I decided to end it via Harry's death by tripping down the stairs in Hogwarts and breaking it. Fic has since been erased from the universe.

 

DH: Goes off to "sacrifice nobly for his friends" in the over emotional walk-of-suicide to Voldemort's hideout in the woods. Voldemort AKs him. They were wrong about his scar being a horcrux, so he doesn't pull a jesus.

DH: After he pulls a jesus and attacks Voldemort: Voldemort is so pissed, that, rather than casting an AK, Voldemort conjures a ten ton block of stone above ickle Harry's head. Said incompetent wizard tries a reducto, but is flattened before the words leave his lips.

 

Harry buys set of Harry Potter books and cut his wrists after reading what a pussy he is in canon.

Harry dies from starvation after Draco leaves him in the train at the start of HBP.