Assalam-o-Alikum everyone!
Thank you so much for this contest.
There are seven Horcruxes in Harry Potter series.
These are following.

Marvolo Gunt's ring:

• Gaunt shack Dumbledore destroy it in his office with Gryffindor's sword.

Salazar Slytherine'd locket:

• In a cave with lake, guarded by inferi found by Harry Potter and Dumbledore.

Helga Hufflepuff's cup:

• Gringott's- the wizard bank ( vault owned by Lestrange)

Rowena Ravenclaw's Diadem:

• Room of requirements

Nagini:

• In the possession of Lord Voldemort.

Harry Potter himself

• Harry Potter himself was not an intended hocrux but become one when Lord Voldemort gave away some part of his soul to Harry when his spell sprung back.

Tom Marvolo Riddle's Diary:

• The diary was actually with Lucius Malfoy and was passed to Ginny in her cauldron. Harry Potter however found it in the girl's bathroom.
• My friend @fizaashraf told me about this context.
• Thank you so much@fizaashraf.