Not counting releases that will be coming out in the next few weeks, here is both my top 20 albums of 2012 and the honorable mentions.
 
1) Beneath The Massacre – Incongruous
2) The Tony Danza Tapdance Extravaganza – Danza IIII The Alpha The Omega
3) Whitechapel – Whitechapel
4) Abnormality – Contaminating The Hive Mind
5) Veil of Maya – Eclipse
6) A Life Once Lost – Estatic Trance
7) Thy Art Is Murder – Hate
8) Erra – Impulse
9) Pathology – The Time Of Great Purification
10) The Holy Guile – Guardians 2.0
11) Monuments – Gnosis
12) Sophicide – Perdition Of The Sublime
13) Allegaeon – Formshifter
14) Evocation – Illusions Of Grandeur
15) Knife Party – Rage Valley
16) Emmure – Slave To The Game
17) The Forsaken – Beyond Redemption
18) A Night At The Chalet – Filth
19) Anaal Nathrakh – Vanitas
20) Aborted – Global Flatline
 
Honorable Mentions Listed In Alphabetical Order:
501 – Smash
A Hero Will Stand – Road To Victory
Abigail Williams – Becoming
Aeon – Aeons Black
Arkaik – Metamorphignition
Arsis – Lepers Caress
As I Lay Dying – Awakened
Beats Antique – Contraption Vol. II
Before The Dawn – Rise Of The Phoenix
Be'lakor – Of Breath And Bone
Beneath – Enslaved By Fear
Beware The Neverending – The Next Level
Bleeding Through – The Great Fire
Caliban – I Am Nemesis
Cannibal Corpse – Torture
Cattle Decapitation – Monolith Of Inhumanity
Colosso – Abrasive Peace
Dethklok – Dethalbum III
Dew-Scented – Icarus
Diablo Swing Orchestra – Pandora's Pinata
Dr. Acula – Nation
Enslaved – RIITIIR
Float Face Down – Bury Your Beliefs
Gojira – Lefant Sauvage
Gojira – The Flesh Alive
Hour of Penance – Sedition
I Am War – Outlive You All
Illdisposed – Sense The Darkness
In Mourning – The Weight Of Oceans
In This Moment – Blood
Jeff Loomis – Plains Of Oblivion
Job For A Cowboy – Demonocracy
Kreayshawn – Somethin 'Bout Kreay
Krewella – Play Hard
Meshuggah – Koloss
Miss May I – At Heart
Murder Construct – Results
Ne Obliviscaris – Portal Of I
Omnihility – Biogenesis
Paroxysmal Butchering – Supreme Revulsion
Phobiatic – An Act Of Atrocity
Pig Destroyer – Book Burner
Pighead – Rotten Body Reanimation
Protohype and Kezwik – Vile
Quartus Saul – More Heroes
Ram-Zet – Freaks In Wonderland
Rise To Fall – Defying The Gods
SkisM – The Division EP
Soulfly – Enslaved
Spineshank – Anger Denial Acceptance
Stalwart – Manifest Of Refusal
The Acacia Strain – Death Is The Only Mortal
The Chariot – One Wing
The Faceless – Autotheism
The Stranged – Survivalism Boulevard
This Or The Apocalypse – Dead Years
Upon A Burning Body – Red White Green
Vision Of Disorder – The Cursed Remain Cursed
While She Sleeps – This Is The Six