A bibliography is given containing 1683 references published during 2005 on piezoelectric and pyroelectric properties of materials and their applications. It contains listings of journal articles, patents and dissertations with complete bibliographic citations. References in which the first author's name begins with letters between N and Z are given in the current guide. Journal articles and patents by authors with names beginning with the letters A through M were published in Guide 27. This bibliography is the continuation of a series published semi-annually.