At a glance
- In short
- Issai is a unique and charming name for baby boys, with origins in Japan and a beautiful meaning of "one life" or "one existence."
- U.S. rank 2025
- Not in the 2025 data · last seen 2016 (#10,744)
- Babies in 2016
- 6 (<0.01% of boys)
- Peak
- #5,781 in 2006
- First recorded
- 1990
Meaning of Issai
Issai is a unique and charming name for baby boys. With its origins in Japan, Issai carries a beautiful meaning of "one life" or "one existence." The name is pronounced as ee-SAH-ee in Japanese (/iˌsaɪ/). It may also be spelled as Isai. In the United States, the name Issai has been steadily gaining popularity since the 1990s. While it may not be among the most common names, it has consistently ranked within the top 10,000 names for newborn boys. This name is perfect for parents seeking a distinctive and meaningful name with an international flair.
How to pronounce Issai
Japanese
- Pronounced ee-SAH-ee /iˌsaɪ/
Popularity of Issai in the U.S.
Issai was last recorded in the U.S. in 2016, ranked #10,744 with 6 babies. It peaked at #5,781 in 2006. It first appears in the records in 1990.
- Rank among U.S. boy names (right scale, #1 at the top)
Year-by-year table, 1990–2016 13 rows
| Year | Babies | Rank | vs previous year |
|---|---|---|---|
| 2016 | 6 | 10,744 | back (not recorded in 2013–2015) |
| 2012 | 7 | 9,709 | ▲ 2,578 |
| 2011 | 5 | 12,287 | ▼ 1,521 |
| 2010 | 6 | 10,766 | back (not recorded in 2009) |
| 2008 | 7 | 9,871 | ▲ 2,498 |
| 2007 | 5 | 12,369 | ▼ 6,588 |
| 2006 | 14 | 5,781 | back (not recorded in 2005) |
| 2004 | 10 | 6,976 | back (not recorded in 2003) |
| 2002 | 9 | 7,055 | ▲ 3,501 |
| 2001 | 5 | 10,556 | ▼ 207 |
| 2000 | 5 | 10,349 | back (not recorded in 1999) |
| 1998 | 7 | 7,560 | back (not recorded in 1991–1997) |
| 1990 | 5 | 8,117 | new |
Notable people named Issai
- Issai Schur was a Russian mathematician who studied at the University of Berlin and spent most of his career in Germany.