Surname Suganthan (Suganthan 
) , all around the world, is quite a rare last name. The last name Suganthan is characteristic of Sri Lanka, where it is quite a rare surname, Qatar, where it is a rare surname, and Saudi Arabia. In absolute terms, this name is the most popular in Sri Lanka, India, and Saudi Arabia. Likewise, Suganthan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Suganthan | Saudi Arabia, Malaysia, India, Sri Lanka, Indonesia |
| navaneethakrishnan suganthan researcher (ORCID 0000-0001-7905-6709) |
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| rama suganthan Indian politician, IN |
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| ponnuthurai n suganthan researcher |
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| ponnuthurai suganthan SG |
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| ponnuthurai nagaratnam suganthan |
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