How do you refer to a diploma qualification in abbreviation?

There are a number of ways to refer to a diploma qualification in abbreviation. Some of the most common abbreviations include:

* Dip. - This is the most common abbreviation for diploma.

* Dipl. - This is another common abbreviation for diploma.

* D. - This is a less common abbreviation for diploma, but it is sometimes used.

* Cert. - This abbreviation is sometimes used for diploma, but it is more commonly used for certificate.

When using an abbreviation for a diploma qualification, it is important to be consistent throughout your writing. You should also use the abbreviation that is most commonly recognized by the audience you are writing for.