Writing tip: Do you use Harvard or Oxford commas?


Writing tip: Do you use Harvard or Oxford commas?

By Jerry Brown, APR
Public Relations Consultant

Do you use Harvard or Oxford commas?Commas don’t get always get a lot of respect. And I often urge clients to look for opportunities to turn them into periods.

But before you dismiss these misunderstood and abused little punctuation marks entirely, did you know there are Oxford and Harvard commas? And you almost certainly use one or the other of them when you write. So a little more respect, please.

You’re a Harvard-comma person if you write red, white and blue.

And you’re using Oxford commas if you write red, white, and blue.

The difference, if you didn’t pick up on it, is the choice of whether to skip the comma before the final item in the series (Harvard style) or put one in (Oxford style).

Oxford commas are also called serial commas. As far as I know that has nothing to do with any killer instincts. I hope not, anyway. Harvard commas are also called series commas.

In school, I learned to put that final comma in, Oxford-style — although we didn’t call it that. But in the world of journalism I became a Harvard man. The AP Stylebook says no comma before the final item in a series and most newspapers follow the AP Stylebook.

In fact, I’ve always thought of the difference as being a choice between AP Style and what everyone else does. That’s because most of the stylebooks I’m aware of favor the Oxford or serial comma.

Which one is correct? Which one should you use? It’s your choice. But be consistent. Use one or the other from beginning to end. Don’t switch back and forth.

We all have stories to tell. Do you need help telling yours?


Jerry Brown, APR, is a public relations professional and former journalist who helps clients get their stories heard, understood and remembered. Need help telling your story? You can reach Jerry at 303-594-8016 |

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