F.I.R., F.I.R. (album), FIR, F.I.R. (1999 film), F.I.R. (TV series), F.I.R No. 339/07/06, Fir, Fir Bolg, Douglas fir, Unlimited (F.I.R. album), Fraser fir, Atlantis (F.I.R. album), Fir River, USCGC Fir (WLM-212), Southern Appalachian spruce–fir forest, Spruce–fir forests, Fir Park, FIRS, Red Creek Fir, Fir Tree, Fir wave, Na Fir Bhrèige, Tall Firs, Silver Firs, Washington, FIR (2022 film), Lone Fir Cemetery, Fir Ol nEchmacht, The Firs, Fir Island, Spruce-fir moss spider, John W. Firor, Fir Fálgae, Doug Fir Lounge, The Fir-Tree, Fir Mountain, FIR transfer function, Pink Fir Apple potato, Fir of Hotovë-Dangëlli National Park, Fir of Drenovë-Sinicë Protected Landscape, Black Firs and Cranberry Bog, Flight Tribe

Pseudotsuga menziesii var. glauca, 2012 FIRS Senior Men's Inline Hockey World Championships, Abies concolor, Abies balsamea, Dinaric calcareous block fir forest, Abies grandis, Abies magnifica, Silver fir, Giolla Íosa Mac Fir Bisigh, Finite impulse response, Burbage Wood and Aston Firs, Pseudotsuga menziesii var. menziesii, FIRS Inline Hockey World Championships, Abies lasiocarpa, Abies amabilis, Firs Park, Derrytresk Fir An Chnoic GAC, Orgyia pseudotsugata, Himalayan silver fir forests, List of Douglas-fir diseases, Abies bracteata, Fir Creek (Bull Run River tributary), Uttley House, Abies cilicica, Hermitage Douglas-fir, The Country of the Pointed Firs, Abies nordmanniana, Abies veitchii, Queets Fir, Fir Domnann, Abies mariesii, Doerner Fir, 2016 FIRS World Inline Hockey Championships – Senior Men's tournament, Abies procera, Firly Apriansyah, Gabe Firment, Abies pindrow, Abies cephalonica, Muhamad Firly, Abies religiosa, Abies sibirica, Abies × borisii-regis, Abies nebrodensis, FIRS (index), Hong Kong Fir Shipping Co Ltd v Kawasaki Kisen Kaisha Ltd, Tanya Fir, Arceuthobium douglasii, Abies holophylla, Firor, Abies alba

F.I.R., F.I.R. (album), FIR, F.I.R. (1999 film), F.I.R. (TV series), F.I.R No. 339/07/06, Fir, Fir Bolg, Douglas fir, Unlimited (F.I.R. album), Fraser fir, Atlantis (F.I.R. album), Fir River, USCGC Fir (WLM-212), Southern Appalachian spruce–fir forest, Spruce–fir forests, Fir Park, FIRS, Red Creek Fir, Fir Tree, Fir wave, Na Fir Bhrèige, Tall Firs, Silver Firs, Washington, FIR (2022 film), Lone Fir Cemetery, Fir Ol nEchmacht, The Firs, Fir Island, Spruce-fir moss spider, John W. Firor, Fir Fálgae, Doug Fir Lounge, The Fir-Tree, Fir Mountain, FIR transfer function, Pink Fir Apple potato, Fir of Hotovë-Dangëlli National Park, Fir of Drenovë-Sinicë Protected Landscape, Black Firs and Cranberry Bog, Flight Tribe, Pseudotsuga menziesii var. glauca, 2012 FIRS Senior Men's Inline Hockey World Championships, Abies concolor, Abies balsamea, Dinaric calcareous block fir forest, Abies grandis, Abies magnifica, Silver fir, Giolla Íosa Mac Fir Bisigh, Finite impulse response, Burbage Wood and Aston Firs, Pseudotsuga menziesii var. menziesii, FIRS Inline Hockey World Championships, Abies lasiocarpa, Abies amabilis, Firs Park, Derrytresk Fir An Chnoic GAC, Orgyia pseudotsugata, Himalayan silver fir forests, List of Douglas-fir diseases, Abies bracteata, Fir Creek (Bull Run River tributary), Uttley House, Abies cilicica, Hermitage Douglas-fir, The Country of the Pointed Firs, Abies nordmanniana, Abies veitchii, Queets Fir, Fir Domnann, Abies mariesii, Doerner Fir, 2016 FIRS World Inline Hockey Championships – Senior Men's tournament, Abies procera, Firly Apriansyah, Gabe Firment, Abies pindrow, Abies cephalonica, Muhamad Firly, Abies religiosa, Abies sibirica, Abies × borisii-regis, Abies nebrodensis, FIRS (index), Hong Kong Fir Shipping Co Ltd v Kawasaki Kisen Kaisha Ltd, Tanya Fir, Arceuthobium douglasii, Abies holophylla, Firor, Abies alba, Dennert Fir Tree, Abies koreana, Abies delavayi, Abies numidica, Pseudotsuga menziesii var. lindleyana, Pseudotsuga macrocarpa, Firly, 2017 Women's Roller Hockey World Cup, The Firs Stadium, Abies pinsapo, Free ideal ring, Na fir bolg, Amhlaoibh Mór mac Fir Bhisigh, Fir Vale School, Abies homolepis, Abies beshanzuensis, Abies densa, Abies firma, The Fir and the Bramble, Troll Bends Fir, West Albany, Albany, Oregon, Fir Craibe, FIR 6 to 6, Fit-fit, Fir Hill Manor, Fir Mountain (New York), The Firs, Whitchurch, Fir and Pond Woods, Anne Firor Scott, Cryphalus piceae, Epinotia meritana, First information report, Abies kawakamii, 2012 FIRS Men's B-Roller Hockey World Cup, Abies nordmanniana subsp. equi-trojani, Firs Zhuravlev, Íomar Fir Bolg, Fir teg, 1989 FIRS Intercontinental Cup, 1993 FIRS Intercontinental Cup, European Food Information Resource Network, USCGC Fir (WLB-213), Phoradendron pauciflorum, Cunninghamia, Wood's Douglas Fir Tree Sanctuary, Men's Roller Hockey World Cup, 2017 FIRS Men's Roller Hockey World Cup, 2004 FIRS Intercontinental Cup, 2008 FIRS Intercontinental Cup, 1992 FIRS Intercontinental Cup, Roller Hockey World Cup U-20, USCGC Fir, 1985 FIRS Intercontinental Cup, 2010 FIRS Intercontinental Cup, 2007 FIRS Intercontinental Cup, 1998 FIRS Intercontinental Cup, 2013 FIRS Intercontinental Cup, 2006 FIRS Intercontinental Cup, Elgar Birthplace Museum, Fir Tree, County Durham