Answer :

AL2006

Well, actually there are an infinite number of them,
and I'm kinda busy right now.

Here are a few:

2/6,  3/9,  4/12,  5/15,  6/18,  7/21,  8/24,  9/27,  10/30,  11/33,  12/36,

13/39,  14/42,  15/45,  16/48,  17/51,  18/54,  19/57,  20/60,  21/63,  22/66,

23/69,  24/72,  25/75,  26/78,  27/81,  28/84,  29/87,  30/90,  31/93,  32/96,

33/99,  34/102,  792/2376.

You can make them yourself, any time you want, as many as you want. 
Here's how:

--  Pick a number, any number.  Write it on top of the fraction.

-- Multiply your number by  3 . Write it on the bottom of the fraction.

There you have it . . . another fraction equivalent to one-third,
and YOU wrote it.