Throughout the world, Tennakoon (Tennakoon 
) is an extremely rare masculine forename. Much more prevalently, Tennakoon is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tennakoon | Bangladesh, United Arab Emirates, Indonesia, Australia, Sri Lanka |
| mudiyanse tennakoon Sri Lankan politician, LK (b. 1934) |
|
|
| sampath tennakoon Sri Lankan actor, LK (b. 1959) |
|
|
| sampath tennakoon researcher |
|