This entry attempts to list the caricaturists in Singapore. It is not a comprehensive list so please feel free to let me know if I miss out any.

P/s:
(1) The order of artists appearance, especially the first few, is somewhat related to the ease of finding their websites in the internet.
(2) The selection of images as well as the number of caricatures featured are mostly random, though in some cases, are related to the ease of navigation within the website.
(3) I have written to most of the caricaturists for their consent to use the images of their works for this post (except for those whom I cannot find the email addresses). Images and related information will be taken down upon request.

Portrait Workshop
Mr. Chong Jit Leong is the founder of Portrait Workshop.
His blog: www.caricature.com.sg
With courtesy of  Mr. Chong Jit Leong

Portrait Workshop also markets for Mr. Q who specializes in vector caricatures. Mr. Q is also represented by Unusually Creation (see below).
 

Unusually Creation
This is not the tyical 2D caricatures. Unusually Creation, founded by Mr. Adam Koh, does 3D caricature figurines.
  His blog: www.sg-caricatures.blogspot.com
With courtesy of  Mr. Adam Koh

Cartoon.SG
There are three caricaturists behind Cartoon.SG, Mr. Kamal Dollah and his wife, Ms. Ye Ruoshi as well as Mr. Luthfi Mustafah.

Some caricatures by Kamal Dollah:

Some caricatures by Ye Ruoshi:

Some caricatures by Luthfi:

Portrait Studio
Mr. Reggie Wan is the man behind Portrait Studio. His shop is at Far East Plaza.

ahBock
Ms. Mulan Tay is also known as ahBock.

TeckinArt Studio
Some caricatures by Mr. Koh Choon Teck:

Studio8
Some caricatures by Ms. Belle Kwan:

Welles Website
Some caricatures by Mr. Welles Tan:

With courtesy of  Mr. Welles Tan

Slothstudio
Some caricatures by Mr. Terence Koh:

With courtesy of  Mr. Terence Koh

Gasak.com
Some caricatures by Mr. Hafiz Abdullah:

With courtesy of  Mr. Hafiz Abdullah

Izoned
Some caricatures by Mr. Mohamed Izwandy:

CyBeriNa
Some caricatures by CyBeriNa:

Mat Tocang's World
Some caricatures by Mat Tocang:

Faceboxz
Some caricatures by Mr. Mas:

rbm18260
Some caricatures by Ms. Rohani:

Gallery Creature
Some caricatures by Mr. Noor Rahman Saini:

With courtesy of  Mr. Noor Rahman Saini

Rizal Wahap
Some caricatures by Mr. Rizal Wahap:
 
With courtesy of  Mr. Rizal Wahap

A Girls Heaven
Some caricatures by Ms. agirlsheaven: