Top Martial Artists (Read OP)

Batman 1,000,000 He's above karate kid in skill
Karate Kid, his skill let's him fight kryptonian level beings
Sensei, completely destroyed bruce in hand to hand.

Lady Shiva is one of the top.

DC: 
 
1. Batgirl (Cassandra Cain)
2. Lady Shiva 
3. Richard Dragon 
4. Bronze Tiger (Ben Turner)
5. Batman (Bruce Wayne)
6. Green Arrow (Connor Hawke)
7. Nightwing (Richard Grayson)  
8. Deathstroke (Slade Wilson) 
9. Constantine Drakon
10. Black Canary (Dinah Lance)
 
On the fence: 
  
Karate Kid (beats everyone here by a light-year, but it feels kind of unfair placing him up there)
White Canary (arguably beat both Huntress and Black Canary at the same time, is said to surpass Shiva in martial arts prowess, but she's a new villain and more feats). 
 
Marvel: 
 
1. Iron Fist (Danny Rand)
2. Shang Chi 
3. Captain America (Steve Rogers)  
4. Wolverine (James Howlett)  
5. Black Panther (T'Challa)
6. Wolverine (Akihiro)  
7. Daredevil (Matt Murdock) 
8. Elektra Natchios  
9. Bullseye (Lester)
10. Crossbones (Brock Rumlow)

" @Devias: not to bash or anything, but why is batgirl above bruce in martial arts? "

Batman 1,000,000
Karate Kid
Richard Dragon
Lady Shiva
Ben Turner
Cassandra Cain 
 
There are more.

why did she kiss him?

DC

Saar the ageless one

Sensei

Cassandra Cain

Lady Shiva

Batman

Connor Hawke

Silver Monkey

Bronze Tiger

The Wrath(both versions)

David Cain

Kobra

Bane

Deathstroke

Black Canary(no Dinah you're not the 7th best)

Nightwing

MARVEL

Mr X

Iron Fist

Taskmaster

Wolverine

Ogun

Steve Rogers

Daredevil

Black Panther

Mandarin

Cat

Shang Chi

Bucky Barness

Gorgon

Fat cobra

Daken

Not including the likes of Karate Kid,Prometheus,Gamora,Batman one million etc.

Here's my top 20:

DC

1)Batman 1000000

2)Karate Kid

3)Deathstroke

4)Constantine Drakon

5)Sensei

6)Batman

7)Cassandra Cain

8)Richard Dragon

9)Lady Shiva

10)Bronze Tiger

11)Connor Hawke

12)I-Ching

13)Dick Grayson

14)Bane

15)Nobody

16)Silver Monkey

17)White Canary

18)Black Canary

19)Cheshire

20)Katana

If Midnighter counts as a martial artist,he is on the top.

And here goes Marvel :

1)Gamora

2)Mantis

3)Ogun

4)Wolverine

5)Daken

6)Mister X

7)Daredevil

8)Iron Fist

9)Black Panther

10)Captain America

11)Bucky Barnes

12)Shang Chi

13)Cat

14)Deadpool

15)Taskmaster

16)Gorgon

17)Psylocke

18)Stick

19)Romulus

20)Elektra

@odinforce: How is Batman better than Karate Kid when he has better feats in beating tougher foes without gadgets and just his skills in martial arts? Also when has Bruce chop a mountain in half like Karate Kid? Just noticed you said Batman 1 million... my bad. Also I reply to the wrong person...