XSP Views 7 meanings found XSP is used for the iShares S&P 500 exchange‑traded fund, Singapore’s Seletar Airport code, and as a term for XML‑based server‑page technologies. Regional Singapore- Seletar Airport, Singapore Computing Xml Server Pages eXtensible Server Page eXtensible Server Page document Extender Session Protocol Business iShares Standard & Poors 500 Index Fund Xcitek Solutions Plus