Japan

Top 5 largest Japanese Companies in the Aerospace & Defense industry by Market Cap

This is the list of the largest public listed companies in the Aerospace & Defense industry from Japan by market capitalization with links to their reference stock.

Japan Aerospace & Defense Industry Analysis
Top Japanese Companies Japan Analysis
World Top Companies World Companies Analysis

Top Aerospace & Defense Companies from Japan as of Jan. 01, 2026

Rank Company Market Cap (USD) Country Sector Industry
1 Mitsui E&S Holdings Co Ltd $4.42 B Japan Japanese Industrials Japanese Aerospace & Defense
2 Namura Shipbuilding Co. Ltd $2.04 B Japan Japanese Industrials Japanese Aerospace & Defense
3 JAMCO Corp $336.0 M

(July 1, 2025)

 Japan Japanese Industrials Japanese Aerospace & Defense
4 Naikai Zosen Corp $181.7 M Japan Japanese Industrials Japanese Aerospace & Defense
5 Sumitomo Precision Products Co. Ltd $133.6 M

(March 1, 2023)

 Japan Japanese Industrials Japanese Aerospace & Defense

Top Aerospace & Defense Companies from Japan as of Jan. 01, 2026

1. Mitsui E&S Holdings Co Ltd

Company Profile: Mitsui E&S Holdings Co Ltd
Market Cap (USD): $4.42 B
Country: Japan
Sector: Japanese Industrials
Industry: Japanese Aerospace & Defense

2. Namura Shipbuilding Co. Ltd

Company Profile: Namura Shipbuilding Co. Ltd
Market Cap (USD): $2.04 B
Country: Japan
Sector: Japanese Industrials
Industry: Japanese Aerospace & Defense

3. JAMCO Corp

Company Profile: JAMCO Corp
Market Cap (USD): $336.0 M (July 1, 2025)
Country: Japan
Sector: Japanese Industrials
Industry: Japanese Aerospace & Defense

4. Naikai Zosen Corp

Company Profile: Naikai Zosen Corp
Market Cap (USD): $181.7 M
Country: Japan
Sector: Japanese Industrials
Industry: Japanese Aerospace & Defense

5. Sumitomo Precision Products Co. Ltd

Company Profile: Sumitomo Precision Products Co. Ltd
Market Cap (USD): $133.6 M (March 1, 2023)
Country: Japan
Sector: Japanese Industrials
Industry: Japanese Aerospace & Defense

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