An SEO or A SEO: Which One Do I Use?
If you’ve ever paused mid-sentence wondering whether to write “an SEO” or “a SEO,” you’re not alone. Grammar rules can get tricky, especially when abbreviations are involved. But don’t worry. This is an easy fix once you understand one simple rule.
Let’s clear it up: It’s “an SEO,” not “a SEO.”
Why It’s “An SEO” (Even Though S Isn’t a Vowel)
At first glance, it might seem like “a SEO” is correct. After all, “S” is a consonant. But when it comes to using a or an, the rule isn’t based on spelling, it’s based on sound.
The abbreviation SEO is pronounced “ess-ee-oh,” and that starts with a vowel sound. S, just like you’d say “an hour” or “an MBA,” the correct phrasing is:
✅ I’m working with an SEO agency.
✅ We need an SEO strategy to improve rankings.
Using “a SEO” sounds awkward because it disrupts the natural flow of speech:
🚫 I’m working with a SEO expert.
🚫 We need a SEO strategy.
If it sounds clunky, that’s your brain telling you something’s off, and in this case, your grammar instincts are right.
What About When You Spell It Out?
If you’re writing out the full term, the rule changes slightly. Since “search engine optimization” starts with a consonant sound, you’d use “a”:
✅ We’re building a search engine optimization plan.
✅ Hiring a search engine optimization company can help.
So, to recap:
Use an before abbreviations that sound like they start with a vowel (like SEO, MBA, FAQ).
Use a before abbreviations or words that sound like they start with a consonant.
A or An SEO: Why It Matters
You might be thinking, “Does this really matter?” And yes, it does, especially if you're writing content for your business. Consistent, correct grammar builds trust and professionalism. It’s one of those small details that make your brand feel more polished and credible.
Plus, people notice when it’s wrong. (They may not mention it, but they notice.)
So, whether you're writing an email, a blog post, or a landing page, you now know the right answer to the question: a SEO or an SEO?
Always go with: an SEO.
Want to Improve Your SEO (And Grammar)?
At New Hill Marketing, we don’t just help you rank; we help you communicate clearly, too. If you're ready to create an SEO strategy that actually works, contact us today and let's get started.
