Sometimes you need a reference in your bibliography even though you never \\cite it in the text — for example, background reading lists, a CV publication list, or a "Further Reading" section.
Include specific uncited entries
% Add specific entries without citing them in text
\\nocite{smith2024}
\\nocite{jones2023, wang2022}
Include ALL entries from your .bib file
\\nocite{*}
% This includes every entry in your .bib file
Works with both systems
\\nocite works identically in BibTeX/natbib and biblatex:
% BibTeX
\\nocite{*}
\\bibliographystyle{plain}
\\bibliography{references}
% biblatex
\\nocite{*}
\\printbibliography
Where to place it
Put \\nocite anywhere before \\bibliography or \\printbibliography. Convention is to place it just before the bibliography command.
Partial inclusion with biblatex
biblatex offers per-type filtering:
% Print only books, even uncited ones
\\nocite{*}
\\printbibliography[type=book, title={Books}]