Which English words are most often mispronounced by non-native English speakers?

1. Almond     
 It's Ah-mund, not Aalmund.

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See also this link.

2. Bury 
It is pronounced Be-ri, the same as berry.
And not as Beu-ry.

3. Elite   
Eh-leet is correct. Eh-light is      wrong pronunciation.

4. Dengue  
Dengee ( 'gee' as in Geese) is the  correct pronunciation for this word. 

5. Diphtheria
The sound of 'ph' here is of the letter 'F'. So, its Dif-theria. 
Likewise, it is Ofthalmologist for Ophthalmologist. 

6. Cache 
Cash is the correct pronunciation of this word. 

7. Gnash  
Its Nash, 'G' here remains silent. 
Likewise, its Naw for Gnaw. 

8. Gauge 
Gage (of Engage) is the correct pronunciation. 

9. Asthma
Pronounced as Azma. 

10. Probably 
Proh-bub-lee, where the 'bub' sound is given the least emphasis. Likewise, library is pronounced as Li-bruh-ree,
Where the 'bruh' sound is given the least emphasis. 

11. Rendezvous 
Ron-day-voo is the correct pronunciation for Rendezvous. 

12. Niche       
It can be pronounced as Neesh or Nitch.
Neesh(US English)
Nitch (British English)

13. Bass           
Base is the correct pronunciation of Bass, when we are talking about the musical instrument while Bass is correct when we are talking about the fish. 

14. Tomb   
the correct pronunciation for Tomb is Toom, like that of the word Boom. 

15. Heart         
It's Haa-rt. Not, Hurt. 

16. Zebra   
The sound of the letter 'Z' is 'Zee', in US English. So, Its Zee-bra. 
According to British English it can be Zeb-ra. 

17. Schedule    
Sked-jule is the correct pronunciation for this word. (According to US English)
And Shed-yool( According to British English)

18. Wednesday    
Whens-day it is. Wed-nuss-day is wrong. 

19. Women    
 Wih-men it is, not Woo-men.