I know there are lists on other websites but didn't see one here so here we go:

01 Iron Man Mark I (movie)
02 Iron Man Mark II (movie)
03 Iron Man Mark III (movie) w/flip up armor
04 Iron Man Power Assault Armor (concept)
05 Iron Man Hypervelocity Armor (concept)
06 Iron Man Deep Dive Armor (concept)
07 Iron Monger (movie)
08 Iron Man Mark VI w/light up chest (movie)
09 Iron Man Mark IV (movie)
10 Iron Man Mark VI (movie)
11 Iron Man Mark V suitcase armor (movie)
12 War Machine (movie) (red eyes and chest reactor)
12 War Machine (movie) (blue eyes and chest reactor)
13 Iron Man Inferno Mission Armor (concept)
14 Ivan "Whiplash" Vanko (movie)
15 Iron Man Fusion Armor [Stealth] (concept)
16 Weapon Assault Drone (movie)
17 Air Assault Drone (movie)
18 Iron Man Ultimate Armor (concept)
19 War Machine Munitions Armor (concept)
20 Mark V Stealth Armor (black and gold) (concept series)
21 Hot Zone Armor (concept series)
22 Iron Man First Appearance Mark I (comic)
23 War Machine Mark XVI (comic)
24 Iron Man Stealth Operations Armor Mark X (comic)
25 Crimson Dynamo (comics)
26 Iron Man Classic Mark V (comic)
27 HulkBuster Iron Man Mark XVIII (comic)
28 Horned Faceplate Iron Man Mark II (comic)
29 Guardsman (comic)
30 Neo Classic Iron Man Mark XIV (comic)
31 Titanium Man (comic)
32 Iron Man Advanced Armor (comic)
33 Iron Man Artic Armor (comic)
34 Iron Man Silver Centurion (comic)
35 Iron Monger (comic)
36 Ultimate Iron Man (comics series)
37 Ivan "Whiplash" Vanko (comics version)
38 War Machine w/interchangeable heads (comic series)
39 Mandarin (comic series)
40 Stark Racing Armor (concept series)

Armor Tech Series Iron Man Juggernaut Upgrade
Armor Tech Series Iron Man Negative Zone Upgrade
Armor Tech Series Iron Man Shockwave Mission
Armor Tech Series Iron Man Exosphere Mission
Armor Tech Series Iron Man Heat Blast Mission

Toys R Us - Fury of Combat 4 pack
- Iron Man Mark VI
- Nick Fury
- 2 Ground Assault Drones

Target - Armored Assault 3 pack
- Ivan "Whiplash" Vanko
- Iron Man Mark V
- Sea Assault Drone

Target - 3 Pack
- Black Widow
- Un-maskable Iron Man mark VI
- Un-maskable War Machine

K-Mart - Proving Ground 3 pack
- Holographic Mark VI
- Hulkbuster
- Recon war Machine

K-Mart - Advacned Tactical Armor 3 pack
- Vibranium Armor (Captain America Mark VI armor)
- Omega Factor Armor (green/silver War Machine)
- Bio Metal Armor (translucent red/silver Mark V armor)

Target Hall of Armor Iron Man Mark I Armor
Target Hall of Armor Iron Man Mark II Armor
Target Hall of Armor Iron Man Mark III Armor
Target Hall of Armor Iron Man Mark IV Armor
Target Hall of Armor Iron Man Mark VI Armor
Target Hall of Armor War Machine