Prestige Classes you can qualify for in 5 levels or less...

[RigaMortus]

Are there any PrCs that one could obtain in 5 levels or less?

 

[Mark Causey]

You can qualify for Racial Paragons (Unearthed Arcana) at first level. Also, the Survivor prestige class from Savage Species can be entered in without any levels for creatures, or one level for a standard race commoner.

 

[Lasher Dragon]

Pale Master

 

[Patryn of Elvenshae]

Thief-Acrobat from Complete Adventurer (I'm planning on taking levels in it soon). Requires a few skills at 8 ranks and the Evasion ability.

 

[CRGreathouse]

The Forsaker is pretty easy to qualify for, as are the prestige (bard, ranger, paladin) in Unearthed Arcana.

 

[Mistwell]

Thief-Acrobat from Complete Adventurer (I'm planning on taking levels in it soon). Requires a few skills at 8 ranks and the Evasion ability.

Well, then that sounds like entry at 6th level. Max ranks at level 5 in a skill is 8. Have to already have those ranks before taking a level in the prestige class, therefore 6th level is the entry point.

 

[IcyCool]

3.0 Gnome Artificer (Magic of Faerun). I think you could get into it at 3rd or 4th level.

 

[Urbanmech]

Dragonmarked Heir, Extreme Explorer, and Inquisitive from Eberron can all be taken at level 5. Other than those I think most PrC's shoot for 6th lv as the earliest.

 

[Lasher Dragon]

LOL The Forsaker?? Yeah, may be easy to qualify for, but good luck keeping the PrC's advantages... that's a costly PrC to play, money-wise & party-please-don't-plot-my-demise-wise.

 

[Darkness]

Tainted Warrior and its relatives (Dragon).