• Arenaria Adanson, 1763 (unaccepted) [Family: Caryophyllaceae]
• Arenaria Bechstein, 1803 (uncertain) [Family: Aves (awaiting allocation)]
• Arenaria Brisson, 1760 [Family: Scolopacidae]
• Arenaria Chen & Shi, 2006 † accepted as Marginifera Waagen, 1884 † [Family: Thecidellinidae]
• Arenaria Linnaeus, 1753 [Family: Caryophyllaceae]
• Arenaria Megerle von Mühlfeld, 1811 accepted as Scrobicularia Schumacher, 1815 [Family: Myidae]
• Arenaria Opitz, 1997 [Family: Cleridae]
• Arenaria Renier, 1804 (unaccepted) [Family: Animalia (awaiting allocation)]
• Arenaria aberrans M.E. Jones
• Arenaria aculeata S. Wats.
• Arenaria alabamensis McCormick, Bozeman & Spongberg accepted as Minuartia uniflora (Walt.) Mattf.
• Arenaria arctica Stev. ex Ser. accepted as Minuartia arctica (Stev. ex Ser.) Graebn.
• Arenaria benthamii Fenzl ex Torr. & Gray
• Arenaria brevifolia Nutt. ex Torr. & Gray accepted as Minuartia uniflora (Walt.) Mattf.
• Arenaria burkei T.J. Howell accepted as Arenaria congesta Nutt.
• Arenaria californica (Gray) Brewer accepted as Minuartia californica (Gray) Mattf.
• Arenaria capillaris Poir.
• Arenaria caroliniana Walt. accepted as Minuartia caroliniana (Walt.) Mattf.
• Arenaria chamissonis Maguire accepted as Stellaria dicranoides (Cham. & Schlecht.) Fenzl
• Arenaria ciliata Linnaeus
• Arenaria compacta Coville accepted as Arenaria kingii (S. Wats.) M.E. Jones
• Arenaria confusa Rydb. accepted as Arenaria lanuginosa (Michx.) Rohrb.
• Arenaria congesta Nutt.
• Arenaria crilloniana W. Drew accepted as Minuartia macrocarpa (Pursh) Ostenf.
• Arenaria cumberlandensis B.E. Wofford & Kral accepted as Minuartia cumberlandensis (B.E. Wofford & Kral) McNeill
• Arenaria dawsonensis Britt. accepted as Minuartia dawsonensis (Britt.) House
• Arenaria diffusa (Hornem.) Wormsk. accepted as Honckenya peploides (L.) Ehrh., 1783
• Arenaria douglasii Fenzl ex Torr. & Gray accepted as Minuartia douglasii (Fenzl ex Torr. & Gray) Mattf.
• Arenaria drummondii Shinners accepted as Minuartia drummondii (Shinners) McNeill
• Arenaria eastwoodiae Rydb.
• Arenaria elegans Cham. & Schlecht. accepted as Minuartia elegans (Cham. & Schlecht.) Schischkin
• Arenaria emarginata (H.K. Sharsmith) Hoover accepted as Minuartia douglasii (Fenzl ex Torr. & Gray) Mattf.
• Arenaria fendleri Gray
• Arenaria filiorum Maguire accepted as Minuartia filiorum (Maguire) McNeill
• Arenaria fontinalis (Short & Peter) Shinners accepted as Stellaria fontinalis (Short & Peter) B.L. Robins.
• Arenaria formosa (Fisch.) Regel accepted as Arenaria capillaris Poir.
• Arenaria franklinii Dougl. ex Hook.
• Arenaria glabra Michx. accepted as Minuartia glabra (Michx.) Mattf.
• Arenaria godfreyi Shinners accepted as Minuartia godfreyi (Shinners) McNeill
• Arenaria gregaria Heller accepted as Minuartia nuttallii (Pax) Briq.
• Arenaria groenlandica (Retz.) Spreng. accepted as Minuartia groenlandica (Retz.) Ostenf.
• Arenaria hookeri Nutt.
• Arenaria howellii S. Wats. accepted as Minuartia howellii (S. Wats.) Mattf.
• Arenaria humifusa Wahlenb.
• Arenaria interpres (Linnaeus, 1758)
• Arenaria jamesiana (Torr.) Shinners accepted as Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman
• Arenaria kingii (S. Wats.) M.E. Jones
• Arenaria lanuginosa (Michx.) Rohrb.
• Arenaria laricifolia (L.) B.L. Robins.p.p. accepted as Minuartia yukonensis Hultén
• Arenaria lateriflora Linnaeus accepted as Moehringia lateriflora (L.) Fenzl
• Arenaria leptoclados (Reichenb.) Guss. accepted as Arenaria serpyllifolia Linnaeus
• Arenaria lithophila Rydb. accepted as Arenaria congesta Nutt.
• Arenaria litorea Fern. accepted as Minuartia dawsonensis (Britt.) House
• Arenaria livermorensis Correll
• Arenaria longipedunculata Hultén
• Arenaria ludens Shinners
• Arenaria macra A. Nels. & J.F. Macbr. accepted as Minuartia michauxii (Fenzl) Farw.
• Arenaria macradenia S. Wats.
• Arenaria macrantha (Rydb.) A. Nels. ex Coult. & A. Nels. accepted as Minuartia macrantha (Rydb.) House
• Arenaria macrocarpa Pursh accepted as Minuartia macrocarpa (Pursh) Ostenf.
• Arenaria macrophylla Hook. accepted as Moehringia macrophylla (Hook.) Fenzl
• Arenaria marcescens Fern. accepted as Minuartia marcescens (Fern.) House
• Arenaria melanocephala (Vigors, 1829)
• Arenaria michauxii (Fenzl) Hook. f. accepted as Minuartia michauxii (Fenzl) Farw.
• Arenaria muriculata Maguire accepted as Minuartia muscorum (Fassett) Rabeler
• Arenaria nardifolia Ledeb. accepted as Arenaria capillaris Poir.
• Arenaria nuttallii Pax accepted as Minuartia nuttallii (Pax) Briq.
• Arenaria obtusiloba (Rydb.) Fern. accepted as Minuartia obtusiloba (Rydb.) House
• Arenaria paludicola B.L. Robins.
• Arenaria patula Michx. accepted as Minuartia patula (Michx.) Mattf.
• Arenaria peploides L.p.p. accepted as Honckenya peploides (L.) Ehrh., 1783
• Arenaria physodes Fisch. ex Ser. accepted as Wilhelmsia physodes (Fisch. ex Ser.) McNeill
• Arenaria propinqua Richards. accepted as Minuartia rubella (Wahlenb.) Hiern.
• Arenaria pseudofrigida (Ostenf. & Dahl) Steffen
• Arenaria pumicola Coville & Leib.
• Arenaria pungens Nutt. accepted as Minuartia nuttallii (Pax) Briq.
• Arenaria pusilla S. Wats. accepted as Minuartia pusilla (S. Wats.) Mattf.
• Arenaria rosei Maguire & Barneby accepted as Minuartia rosei (Maguire & Barneby) McNeill
• Arenaria rossii R. Br. ex Richards. accepted as Minuartia rossii (R. Br. ex Richards.) Graebn.
• Arenaria rubella (Wahlenb.) Sm. accepted as Minuartia rubella (Wahlenb.) Hiern.
• Arenaria sajanensis auct. non Willd. ex Schlecht. accepted as Minuartia obtusiloba (Rydb.) House
• Arenaria sajanensis Willd. ex Schlecht. accepted as Minuartia biflora (L.) Schinz & Thellung
• Arenaria salmonensis Henderson accepted as Arenaria aculeata S. Wats.
• Arenaria saxosa Gray accepted as Arenaria lanuginosa (Michx.) Rohrb.
• Arenaria serpyllifolia Linnaeus
• Arenaria stenomeres Eastw.
• Arenaria stricta Michx. accepted as Minuartia michauxii (Fenzl) Farw.
• Arenaria subcongesta (S. Wats.) Rydb. accepted as Arenaria congesta Nutt.
• Arenaria tenella Nutt. accepted as Minuartia tenella (Nutt.) Mattf.
• Arenaria texana (B.L. Robins.) Britt. accepted as Minuartia michauxii (Fenzl) Farw.
• Arenaria uintahensis A. Nels. accepted as Arenaria kingii (S. Wats.) M.E. Jones
• Arenaria uliginosa Schleich. ex Lam. & DC. accepted as Minuartia michauxii (Fenzl) Farw.
• Arenaria uniflora (Walt.) Muhl. accepted as Minuartia uniflora (Walt.) Mattf.
• Arenaria ursina B.L. Robins.