DH SPOILERS!
Philosopher's Stone:
(reference to) James Potter
(reference to) Lily Potter
Quirrel
Chamber Of Secrets:
(reference to) Nearly Headless Nick (Sir Nicholas De Mimsy Porpington)
(flashback to and important but not during timeline of the book) Moaning Murtle
*Lord Voldemort's Diary Horcrux*
Prisoner of Azkaban:
(reference to) 12 bystanders from pettigrew (muggles)
Goblet Of Fire:
Bertha Jorkins
(reference to) Tom Riddle Snr
Mrs Riddle
Tom Riddle
Frank Bryce
The Spider in Defence Against the Dark Arts
all blast ended skrewts save a couple
Mrs Crouch
Bartemius Crouch Snr
Cedric Diggory
Order Of The Phoenix:
(reference to) Regulus Black and the "Noble" Black family
Original Head Giant and other Giants
the flobberworms
Boderick Bode
Sirius Black (=O i cried at this one)
note: Arthur Weasley orginally but he got a reprise
Half Blood Prince:
*Lord Voldemort's Ring/Resurrection Stone Horcrux*
(vague references to other characters)
Muggles in village after Giant attack
Muggles when Bridge Collapsed
Madam Bones
One other wizard (so sorry i forgot the name atm)
Igor Karkaroff
(many mentioned in Daily Prophet but not many named)
Hannah Abbot's mother
(referred to)Marvolo Guant
(referred to) Morphin
(referred to) Merope
Billy Stubbs' rabbit
(battle)
Albus Dumbledore =O
1 unnamed Death eater
Deathly Hallows (here we go!):
Teacher of Muggle Studdies
Mad-Eye-Moody
Rufus Scrimgeour
(order?)
Ted Tonks
The other goblin
Bathilda Bagshot
(reference to) Ariana Dumbledore
Mr Dumbledore
Mrs Dumbledore
*Lord Voldemort's Locket Horcrux*
Gregorovitch
Wormtail
DOBBY! NOOOOOOOOOO! i was only sad coz of the discription at first then i realised how sad it really was
voldie kills group of death eaters
Gellert Grindelwald
*Lord Voldemort's Cup Horcrux*
(battle do not know order! except #1 and 2 and 3)
Vincent Crabbe
*Lord Voldemort's Diadem Horcrux*
Severus Snape
Fred Weasley
colin creevey
nymphadora tonks/lupin
remus lupin
*Lord Voldemort's Harry Potter Horcrux*
Nagini
Bellatrix Lestrange
LORD VOLDEMORT!
(50 others from hogwarts unnamed)
note: mcgonagall would have died some time the final book and epilogue. jk said so
so hope that answered your question... that was all from memory lol
oh yes saddest were sirius and dobby (maybe the latter) because harry was distraught about them