Koji vs Tobi

Baby Name Comparison — 2026

Koji

Boy #4,251 Most Popular 2 Syllables

Meaning

"luminous second son"

Origin: Japanese ko (light) and ji (second son)

Cultural Roots

Japanese

Quick Stats

Popularity Rank
#4,251
Total SSA Count
25
Syllables
2
Formality
Moderate
Nicknames
Ko

Playground Safety Score

✓ All Clear
Full profile for Koji →

Tobi

Boy #4,129 Most Popular 2 Syllables

Meaning

"God is good"

Origin: Hebrew Tuviyah

Cultural Roots

Hebrew German English Nigerian Japanese

Quick Stats

Popularity Rank
#4,129
Total SSA Count
26
Syllables
2
Formality
Casual
Nicknames
Toby

Playground Safety Score

✓ All Clear
Full profile for Tobi →

Popularity Comparison

Koji Rank #4,251
Tobi Rank #4,129

Tobi is more popular, ranked #4129 vs #4251 for Koji.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Koji ___

  • Koji James
  • Koji Alexander
  • Koji Lee
  • Koji Ren
  • Koji Kai
  • Koji Rio

Tobi ___

  • Tobi James
  • Tobi Lee
  • Tobi Alexander
  • Tobi Michael
  • Tobi William
  • Tobi John

Sibling Name Ideas

Names that pair well as siblings.

If you choose Koji

Hana Yuki Kenji Riku Saki

If you choose Tobi

Levi Eli Ava Mia Noah

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Koji or Tobi more popular?

Tobi is more popular, ranked #4129 compared to Koji at #4251 in the United States.

What do Koji and Tobi mean?

Koji means "luminous second son" (Japanese ko (light) and ji (second son) origin). Tobi means "God is good" (Hebrew Tuviyah origin).

Are Koji and Tobi boy or girl names?

Koji is primarily a boy name. Tobi is primarily a boy name.

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← Full profile: Koji ← Full profile: Tobi Browse all baby names