Sidneioides

Sidneioides is a genus of colonial sea squirts, tunicates in the family Polyclinidae.

Species
The World Register of Marine Species lists the following species:
 * Sidneioides ivicense Pérès, 1957
 * Sidneioides japonense Redikorzev, 1913
 * Sidneioides peregrinus Kremer et al., 2011
 * Sidneioides snamoti (Oka, 1927)
 * Sidneioides tamaramae Kesteven, 1909