| NCSA | National Center for Supercomputing Applications | (美国)国家超级计算应用中心 |
| NCSA | North Central Sociological Association | 中北部社会学协会 |
| NCSA | National Computer Science Association (firewall certification) | 国家计算机科学协会(防火墙认证) |
| NCSA | North Carolina Society of Anesthesiologists | 北卡罗来纳州麻醉医师协会 |
| NCSA | National Crushed Stone Association | 国家碎石协会 |
| NCSA | North Carolina Society of Accountants (Conover, North Carolina) | 北卡罗来纳州会计师协会(北卡罗来纳州康沃尔) |
| NCSA | Northern California Soaring Association | 北加州翱翔协会 |
| NCSA | National Collegiate Scouting Association (Chicago, Illinois) | 全国大学生侦察协会(伊利诺伊州芝加哥) |
| NCSA | National Cued Speech Association | 国家提示言语协会 |
| NCSA | North Carolina Soaring Association (aviation) | 北卡罗来纳州翱翔协会(航空) |
| NCSA | Nose Creek Swim Association (Calgary, Alberta, Canada) | 鼻子溪游泳协会(加拿大阿尔伯塔省卡尔加里) |
| NCSA | National Club Swimming Association | 国家俱乐部游泳协会 |
| NCSA | Bitmap graphics (Hierarchical Data File) (NCSA) | 位图图形(分层数据文件)(NCSA) |
| NCSA | Nebraska Council of School Administrators | 内布拉斯加州学校管理委员会 |
| NCSA | Network Current Systems Assessment (Sprint) | 网络当前系统评估(Sprint) |
| NCSA | National Centrer for Supercomputing Applications | 国家超级计算应用中心 |
| NCSA | National Cadet Special Activity | 全国学员特别活动 |
| NCSA | Netscreen Certified Security Associate | Netscreen认证安全助理 |
| NCSA | Noncommercial Spot Announcement | 非商业现货公告 |
| NCSA | Non Commercial Sustaining Announcement | 非商业持续性公告 |
| NCSA | North, Central, and South America | 北美、中美洲和南美 |
| NCSA | National Computer Security Association | 国家计算机安全学会 |
| NCSA | NATO CIS Services Agency | 北约独联体服务机构 |
| NCSA | Non-Commercial Sustaining Announcement | 非商业持续性公告 |
| NCSA | National Cyber Security Alliance | 国家互联网安全联盟 |
| NCSA | National Computational Science Alliance | 国家计算科学联盟 |
| NCSA | North Carolina School of the Arts | 北卡罗莱纳艺术学院 |
| NCSA | National Center for Statistics and Analysis | 国家统计分析中心 |
| NCSA | Naval C4I Systems Architecture | 海军C4I系统体系结构 |
| NCSA | Nossa Senhora Conceição Aparecida | Nossa Senhora Conceição Aparecida |