Contadina

"Contadina has several varieties of tomato paste and all
but one are gluten free. The Italian Tomato Paste with
Italian Seasonings contains "wheat gluten protein" and is
clearly not gluten free. Wheat is included in the ingredients list
and is noted on the contains statement at the end of the list.
  But Contadina's plain tomato paste only has one ingredient -
tomatoes. The Italian tomato pastes in roasted garlic and
pesto flavors have longer ingredient lists, but no gluten-
containing ingredients. Contadina has a list of products that
are "gluten free or naturally gluten free," which includes the three
of its four paste flavors as well as all crushed, diced, stewed,
whole and pureed tomatoes. The list also includes all Del Monte
brand tomato products."

-Gluten-Free Living Magazine, Spring 2012