Voy a dirigir la reunión.

Both are correct, but they feel slightly different.

• Voy a dirigir la reunión uses ir a + infinitive, which is very common in everyday Spanish for a planned or expected future action.
• Dirigiré la reunión is the simple future. It is also correct, but it can sound a bit more formal, more definite, or less conversational depending on context.

In normal speech, Spanish speakers very often prefer voy a + infinitive.

Voy is the first-person singular form of ir, which means to go.

So:

• yo voy = I go / I am going

In this sentence, though, voy is not about physically going somewhere. It is part of the future structure:

• ir a + infinitive = to be going to + verb

So voy a dirigir means I am going to lead/run/chair.

Because Spanish uses the pattern:

• ir + a + infinitive

This is a fixed structure for expressing a future plan or intention.

Examples:

• Voy a llamar. = I’m going to call.
• Vamos a salir. = We’re going to go out.
• Va a empezar. = It’s going to start.

So in Voy a dirigir la reunión, the a is required.

Because Spanish often leaves out subject pronouns when they are not needed.

The form voy already tells you the subject is I, so yo is usually unnecessary.

• Voy a dirigir la reunión. = normal, natural
• Yo voy a dirigir la reunión. = still correct, but adds emphasis

You might include yo if you want contrast or emphasis, for example:

• Yo voy a dirigir la reunión, no Marta.

Here, dirigir means something like:

• to lead
• to run
• to chair
• to be in charge of

With la reunión, it means leading or conducting the meeting.

So depending on context, English could render it as:

• I’m going to lead the meeting
• I’m going to run the meeting
• I’m going to chair the meeting

Yes. Dirigir una reunión is a natural and standard way to say to lead/run/chair a meeting.

Other possible expressions exist, but dirigir is very normal in professional or formal contexts.

For example:

• Ella dirige las reuniones del equipo. = She runs the team meetings.

Spanish uses the definite article more often than English does.

Here, la reunión usually refers to a specific meeting that both speaker and listener know about, or a meeting understood from context.

So:

• Voy a dirigir la reunión = I’m going to lead the meeting

If you said una reunión, that would mean:

• Voy a dirigir una reunión = I’m going to lead a meeting

That sounds less specific.

In Spain Spanish, voy is pronounced roughly like boy, but with a softer b/v sound than in English.

A simple approximation for an English speaker is:

• voy ≈ boy

The oy sound is like in English boy.

A rough pronunciation for Spain Spanish is:

• dee-ree-HEER

A few important points:

• The g before i sounds like a strong Spanish j sound, not like the English g in give.
• The final r is a light tap, not a strong English r.
• Stress falls on the last syllable: diriGIR

So:

• dirigir → dee-ree-HEER

A rough guide is:

• reh-oo-NYON

A few things to notice:

• The written accent in reunión shows that the stress is on the last syllable.
• The ión part sounds something like yon, but with a Spanish n sound at the end.
• The u is pronounced; it is not silent.

So the stressed part is:

• reu-ni-ÓN

Yes, but the basic order here is the most neutral and natural:

• Voy a dirigir la reunión.

Spanish word order is flexible, but changes often add emphasis or sound more marked.

For example:

• La reunión la voy a dirigir yo. = I’m the one who’s going to lead the meeting.
• Yo voy a dirigir la reunión. = emphasis on I

For a learner, the original word order is the best default.

Yes, but it means something different.

• Voy a dirigir la reunión = I’m going to lead the meeting → future / intention
• Estoy dirigiendo la reunión = I’m leading the meeting → happening right now

So if the meeting has not started yet, voy a dirigir is the right choice.

It is neutral. It works in both formal and informal situations.

Nothing in the sentence is especially formal or especially casual. It would sound natural in everyday conversation, at work, or in a professional setting.