What does Josai mean and where does it come from?
Josai (ジョサイ) is a Japanese given name that is relatively uncommon. It is typically used for males and can be constructed using different kanji characters, with one common configuration designating 'second son' (次男). The components of the name can change based on the kanji chosen, allowing various me
Cultural significance
Josai has been a cherished name across cultures, particularly in Japan-speaking communities, where it reflects values of second son.
Peak popularity
Reached #4615 in 2025 — currently #4615 in the US.
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Related Reading
Japan-origin baby names with timeless appeal
Browse names →How else can you spell Josai?
Same sound, different look — useful if you want something slightly more distinctive
What middle names flow best with Josai?
Josai works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful
Josai Miles
One syllable · vintage charm
Josai Brooks
One syllable · timeless choice
Josai Gael
One syllable · timeless choice
Josai Quinn
One syllable · timeless choice
Josai Myles
One syllable · timeless choice
Josai Dean
One syllable · on the rise
How popular is Josai right now?
Rising fast — up 2418 spots — currently #4615 in the US out of 135.5k tracked names
| Year | US Rank | Births | vs Prior Year |
|---|
| 2025 | #4615 | 22 | ▲ up 2418 · +83% births |
| 2024 | #7033 | 12 | ▲ up 48 |
| 2023 | #7081 | 12 | ▲ up 6153 · +140% births |
| 2022 | #13234 | 5 | ▼ down 1846 · -17% births |
| 2021 | #11388 | 6 | ▲ up 1722 · +20% births |
| 2020 | #13110 | 5 | ▲ up 61 |
| 2005 | #13171 | 5 | — |
The story of Josai
Josai is a relatively modern name, first appearing in US records in 2005. With 40 total births recorded, Josai remains relatively uncommon. The name has grown more popular over time, rising from #13171 in 2005 to #7081 in 2023.
Names that peaked alongside Josai in 2025:
💎Josai has only 40 total recorded births since 2005 — rarer than 99% of names in our database.
What are good nicknames for Josai?
What names sound and feel like Josai?
Based on sound, origin, and style — parents who love Josai also consider these
Common questions about the name Josai
What does the name Josai mean?
Josai means "second son" — a name rooted in Japan tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.
How popular is the name Josai?
Josai is currently a distinctive and less common name as a boy name in the US and is rapidly gaining popularity — searches for Josai have increased significantly in recent years.
What is the cultural origin of Josai?
Josai originates from Japan tradition. Japan names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.
How do you pronounce the name Josai?
Josai is a three-syllable name pronounced JOH-ES-AY-EYE. The pronunciation is straightforward for English speakers, and the name reads clearly on paper — an important practical consideration for parents.
What sibling names go well with Josai?
Josai pairs beautifully with sibling names that share a similar Japan heritage or complement its melodic and flowing sound. Names with a similar vibe create a cohesive sibling set without matching too closely.